1
|
Unravelling facilitation among introduced species, a mechanistic approach. Biol Invasions 2021. [DOI: 10.1007/s10530-021-02592-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
2
|
Yan J, Sui H, Huang H, Wang X, Qiu D, Cui B. An integrative perspective to understand the impact of co-occurring ecosystem engineers on macroinvertebrates. MARINE POLLUTION BULLETIN 2020; 152:110921. [PMID: 32479294 DOI: 10.1016/j.marpolbul.2020.110921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 01/14/2020] [Accepted: 01/19/2020] [Indexed: 06/11/2023]
Abstract
Invasion of habitat-modifying nonnative species and alteration of ecosystem engineer by exploitation are two of the dominant human impacts on natural ecosystem functioning. The effects of these co-occurring ecosystem engineers may act simultaneously and vary independently depending on ambient environmental conditions they modify. Using a saltmarsh ecosystem with continuing invasion of nonnative cordgrass and aggregation of native bivalve shells, we tested whether the ecosystem engineering effects of shell aggregation on macroinvertebrates depended on the plants due to their ability to trap shell debris. We found habitats covered with shell aggregation and vegetated cordgrass significantly increase the biodiversity but decrease the biomass of macroinvertebrates comparing to the tidal bare flats, whereas no differences were detected among shell covered, cordgrass vegetated and their coexistent habitats. Our study highlights the importance of considering multiple, potentially conflicting management goals, which may require flexibility and trade-offs to integrate nonnative and native resources into ecosystem management.
Collapse
Affiliation(s)
- Jiaguo Yan
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Haochen Sui
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Honghui Huang
- Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China
| | - Xinyan Wang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Dongdong Qiu
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Baoshan Cui
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China.
| |
Collapse
|
3
|
Tait LW, Lohrer AM, Townsend M, Atalah J, Floerl O, Inglis GJ. Invasive ecosystem engineers threaten benthic nitrogen cycling by altering native infaunal and biofouling communities. Sci Rep 2020; 10:1581. [PMID: 32005953 PMCID: PMC6994685 DOI: 10.1038/s41598-020-58557-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 01/15/2020] [Indexed: 11/13/2022] Open
Abstract
Predicting the effects of invasive ecosystem engineering species in new bioregions has proved elusive. In part this is because separating biological effects from purely physical mechanisms has been little studied and yet could help predict potentially damaging bioinvasions. Here we tested the effects of a large bio-engineering fanworm Sabella spallanzanii (Sabella) versus worm-like structures (mimics) on gas and nutrient fluxes in a marine soft bottom sediment. Experimental plots of sediment in Hauraki Gulf (New Zealand) were used to test the hypothesis that ecosystem engineers negatively influence benthic ecosystem function through autogenic mechanisms, facilitating activity by biofouling organisms and competitive exclusion of native infauna. Enhanced physical structure associated with Sabella and mimics increased nitrogen fluxes, community metabolism and reduced denitrification from 23 μmol m−2 h−1 to zero at densities greater than 25 m2. Sabella plots on average had greater respiration (29%), NH4 release (33%), and greater NO3 release (52%) compared to mimics, suggesting allogenic (biological) mechanisms occur, but play a secondary role to autogenic (physical) mechanisms. The dominance of autogenic mechanisms indicates that bio-engineers are likely to cause significant impacts when established, regardless of fundamental differences in recipient regions or identity of the introduced bio-engineer. In the case of Sabella spallanzanii, compromised denitrification has the potential to tip the balance of net solute and gas exchanges and cause further ecological degradation in an already eutrophic system.
Collapse
Affiliation(s)
- L W Tait
- National Institute of Water and Atmospheric Research, 10 Kyle St, Riccarton, Christchurch, 8011, New Zealand.
| | - A M Lohrer
- National Institute of Water and Atmospheric Research, 10 Silverdale Road Hillcrest, Hillcrest, Hamilton, 3216, New Zealand
| | - M Townsend
- National Institute of Water and Atmospheric Research, 10 Silverdale Road Hillcrest, Hillcrest, Hamilton, 3216, New Zealand.,Waikato Regional Council, 401 Grey St, Hamilton East, Hamilton, 3216, New Zealand
| | - J Atalah
- Cawthron Institute 98 Halifax St E, The Wood, Nelson, 7010, New Zealand
| | - O Floerl
- Cawthron Institute 98 Halifax St E, The Wood, Nelson, 7010, New Zealand
| | - G J Inglis
- National Institute of Water and Atmospheric Research, 10 Kyle St, Riccarton, Christchurch, 8011, New Zealand
| |
Collapse
|
4
|
Can invasive habitat-forming species play the same role as native ones? The case of the exotic marine macroalga Rugulopteryx okamurae in the Strait of Gibraltar. Biol Invasions 2019. [DOI: 10.1007/s10530-019-02049-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
5
|
Phillips JS, McCormick AR, Einarsson Á, Grover SN, Ives AR. Spatiotemporal variation in the sign and magnitude of ecosystem engineer effects on lake ecosystem production. Ecosphere 2019. [DOI: 10.1002/ecs2.2760] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Joseph S. Phillips
- Department of Integrative Biology University of Wisconsin‐Madison Madison Wisconsin 53706 USA
| | - Amanda R. McCormick
- Department of Integrative Biology University of Wisconsin‐Madison Madison Wisconsin 53706 USA
| | - Árni Einarsson
- Mývatn Research Station Skútustaðir IS‐660 Iceland
- Faculty of Life and Environmental Sciences University of Iceland Reykjavik IS‐101 Iceland
| | - Shannon N. Grover
- Department of Integrative Biology University of Wisconsin‐Madison Madison Wisconsin 53706 USA
| | - Anthony R. Ives
- Department of Integrative Biology University of Wisconsin‐Madison Madison Wisconsin 53706 USA
| |
Collapse
|
6
|
Voerman SE, Glasby TM, Gladstone W, Gribben PE. Morphological variation of a rapidly spreading native macroalga across a range of spatial scales and its tolerance to sedimentation. MARINE ENVIRONMENTAL RESEARCH 2019; 147:149-158. [PMID: 31101381 DOI: 10.1016/j.marenvres.2019.02.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 02/26/2019] [Accepted: 02/28/2019] [Indexed: 06/09/2023]
Abstract
Understanding how species' traits can shape winners and losers of environmental change can help resolve drivers of current community composition patterns and predict future drivers. Sedimentation is one of the main environmental stressors shaping coastal marine communities and tolerance of high sedimentation rates (e.g. via morphological variation) may allow for competitive dominance. In New South Wales, Australia, the abundance and range of the native green macroalga Caulerpa filiformis have increased over recent decades, apparently associated with sediment disturbance. We used field measurements to test hypotheses about morphological variability in C. filiformis in relation to local- and large-scale environmental variation in water depth, sediment cover and latitude. Using a lab experiment, we tested hypotheses about survival and morphological change under different sedimentation regimes. In the field, C. filiformis fronds were more elongated and less branched when a sediment veneer is present and when water depth increased (i.e. reduced light). At larger spatial scales, frond length and width decreased with increased latitude, but latitude was less important in explaining the variation C. filiformis' length than were depth or sedimentation. Our lab experiment showed a high tolerance to sedimentation, aided by increased investment in vertical growth. This study shows that rapid morphological plasticity is a likely key attribute of the spreading native macroalga C. filiformis. We argue that having a broad environmental tolerance is key to define a species success under environmental change.
Collapse
Affiliation(s)
- Sofie E Voerman
- School of Life Sciences, University of Technology Sydney, NSW, 2007, Australia; Centre for Marine BioInnovation, School of Biological, Earth and Environmental Sciences, University of New South Wales, NSW, 2052, Australia; Sydney Institute of Marine Science, 19 Chowder Bay Road, Mosman, NSW, 2088, Australia.
| | - Tim M Glasby
- New South Wales Department of Primary Industries, Port Stephens Fisheries Institute, Locked Bag 1, Nelson Bay, NSW, 2315, Australia
| | - William Gladstone
- School of Life Sciences, University of Technology Sydney, NSW, 2007, Australia
| | - Paul E Gribben
- Centre for Marine BioInnovation, School of Biological, Earth and Environmental Sciences, University of New South Wales, NSW, 2052, Australia; Sydney Institute of Marine Science, 19 Chowder Bay Road, Mosman, NSW, 2088, Australia
| |
Collapse
|
7
|
Anton A, Geraldi NR, Lovelock CE, Apostolaki ET, Bennett S, Cebrian J, Krause-Jensen D, Marbà N, Martinetto P, Pandolfi JM, Santana-Garcon J, Duarte CM. Global ecological impacts of marine exotic species. Nat Ecol Evol 2019; 3:787-800. [DOI: 10.1038/s41559-019-0851-0] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Accepted: 02/24/2019] [Indexed: 11/09/2022]
|
8
|
Haram LE, Kinney KA, Sotka EE, Byers JE. Mixed effects of an introduced ecosystem engineer on the foraging behavior and habitat selection of predators. Ecology 2018; 99:2751-2762. [DOI: 10.1002/ecy.2495] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 05/15/2018] [Accepted: 05/24/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Linsey E. Haram
- Odum School of Ecology University of Georgia 140 E Green Street Athens Georgia 30602 USA
- Smithsonian Environmental Research Center 647 Contees Wharf Road Edgewater Maryland 21037 USA
| | - Kaitlin A. Kinney
- Odum School of Ecology University of Georgia 140 E Green Street Athens Georgia 30602 USA
- School of Environment and Natural Resources The Ohio State University 2021 Coffey Road Columbus Ohio 43210 USA
| | - Erik E. Sotka
- Grice Marine Laboratory College of Charleston 205 Fort Johnson Road Charleston South Carolina 29412 USA
| | - James E. Byers
- Odum School of Ecology University of Georgia 140 E Green Street Athens Georgia 30602 USA
| |
Collapse
|
9
|
Bradley DJ, Gladstone W, Gribben PE. Relationships between the spread of Caulerpa filiformis and fish communities on temperate rocky reefs. JOURNAL OF FISH BIOLOGY 2018; 93:12-20. [PMID: 29882355 DOI: 10.1111/jfb.13664] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 03/20/2018] [Indexed: 06/08/2023]
Abstract
The previously sub-dominant native marine macrophyte Caulerpa filiformis is now dominant on many sub-tidal rocky reefs in New South Wales (NSW), Australia and is expanding its distribution. As C. filiformis is highly chemically defended and structurally different to co-occurring habitat-forming macrophytes, two key attributes that govern fish assemblages, we hypothesized that fish assemblages, particularly herbivorous fishes, would be different at sites where C. filiformis occurred from where it was previously absent and within sites, fish community structure would be correlated to the cover of C. filiformis. We investigated these hypotheses by determining reef-associated fish assemblage attributes (assemblage structure, species richness, total abundance, Shannon-Weiner diversity, abundance of herbivorous species) along transects within sites where C. filiformis was present and absent. Surprisingly, despite large patches and very high densities of C. filiformis on the reefs we sampled, at larger spatial scales (i.e., among sites) no fish assemblage metrics differed between sites with large stands of C. filiformis and sites without the alga. Moreover the abundance of one dominant herbivore, the rock cale Aplodactylus lophodon, was greater at sites within large beds of C. filiformis. At smaller spatial scales, however, i.e. within sites where C. filiformis was present, fish assemblages did vary as a function of C. filiformis cover along transects, although this was not consistent across sampling times. Overall, our results suggest that the potential effects of the spread of this alga on faunal communities warrants further investigation.
Collapse
Affiliation(s)
- Daniel J Bradley
- School of Life Sciences, University of Technology Sydney, Sydney, Australia
| | - William Gladstone
- School of Life Sciences, University of Technology Sydney, Sydney, Australia
| | - Paul E Gribben
- Centre for Marine Bio-innovation, School of Biological, Earth and Environmental Science, University of New South Wales, Sydney, Australia
| |
Collapse
|
10
|
Romić I, Nakajima Y. Ecosystem engineering as an energy transfer process: a simple agent-based model. THEOR ECOL-NETH 2017. [DOI: 10.1007/s12080-017-0357-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
11
|
Voerman SE, Glasby TM, Gladstone W, Gribben PE. Habitat associations of an expanding native alga. MARINE ENVIRONMENTAL RESEARCH 2017; 131:205-214. [PMID: 29021082 DOI: 10.1016/j.marenvres.2017.09.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 09/20/2017] [Accepted: 09/24/2017] [Indexed: 06/07/2023]
Abstract
There are many examples of native macrophytes becoming locally dominant and spreading outside their traditional distributions, but the causes and impacts are often not understood. In New South Wales, Australia, the green alga Caulerpa filiformis is undergoing a range expansion and has transitioned from a subdominant to a dominant alga on several rocky shores around the Sydney coastline. Here we investigated relationships between established patches of C. filiformis, the habitat it occupies and associated algal communities at multiple subtidal sites over the green alga's 700 km range. We tested the following predictions: 1) C. filiformis cover differs among substrata, being greatest on turf-forming algae; 2) C. filiformis cover is positively related to environmental variables linked to increased sedimentation (e.g. reduced reef width, surface slope, increased rugosity and distance from shore); 3) occurrence of C. filiformis is associated with a change in macrophyte community structure and a reduction of macrophyte richness; 4) intact native algal canopies inhibit C. filiformis spread, but turf-forming algae and bare sand are susceptible to invasion. Substratum associations were highly consistent among sites, but contrary to our prediction, C. filiformis was most commonly associated with rock or rock + sand substratum and less frequently associated with turf-forming algae substratum. C. filiformis cover was negatively correlated with reef width, which explained most of the variation observed, although local scale variables distance from shore, reef slope, and water depth were also correlated with C. filiformis cover. Algal diversity and community composition typically differed in the presence of C. filiformis, often with a reduction of algal abundances, in particular Sargassum spp., although results varied among substrata and sites. However, monitoring of borders suggested that C. filiformis does not invade and outcompete undisturbed adjacent canopy-forming algae over a 12 month period. Our results suggest that disturbance processes (possibly linked to sedimentation) acting at the site and quadrat scale are likely important determinants of C. filiformis cover and spread, and hence its potential ecological impacts.
Collapse
Affiliation(s)
- Sofie E Voerman
- School of Life Sciences, University of Technology Sydney, NSW 2007, Australia; Climate Change Cluster, University of Technology Sydney, NSW 2007, Australia(1).
| | - Tim M Glasby
- New South Wales Department of Primary Industries, Port Stephens Fisheries Institute, Locked Bag 1, Nelson Bay, NSW 2315, Australia
| | - William Gladstone
- School of Life Sciences, University of Technology Sydney, NSW 2007, Australia
| | - Paul E Gribben
- Centre for Marine BioInnovation, School of Biological, Earth and Environmental Sciences, University of New South Wales, NSW 2052, Australia; Sydney Institute of Marine Science, 19 Chowder Bay Road, Mosman, NSW 2088, Australia
| |
Collapse
|
12
|
Gribben PE, Nielsen S, Seymour JR, Bradley DJ, West MN, Thomas T. Microbial communities in marine sediments modify success of an invasive macrophyte. Sci Rep 2017; 7:9845. [PMID: 28852143 PMCID: PMC5575248 DOI: 10.1038/s41598-017-10231-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 08/08/2017] [Indexed: 12/22/2022] Open
Abstract
Invasive plants have extensive impacts on ecosystem function and biodiversity globally. Our inability to manage invasive species stems in part from a lack of understanding of the processes that control their successful establishment and spread. To date, studies have largely considered how above-ground processes control native/invasive plant interactions. Emerging research from terrestrial and wetland ecosystems demonstrates that below-ground processes under microbial control can determine the outcome of interactions between native and invasive plants. Whether sediment microbes modify the success of invasive macrophytes in marine ecosystems is untested, despite marine sediment microbes controlling many ecological processes (e.g. nutrient cycling) comparable to those in terrestrial ecosystems. We first show that sediment bacterial communities differ between the native seagrass Zostera capricorni and the invasive alga Caulerpa taxifolia and that those differences relate to functional changes in sulfur cycling between the macrophytes. Second, by experimentally manipulating the microbial communities we show that intact microbial communities in Z. capricorni sediments provide biotic resistance by reducing C. taxifolia fragment growth 119% compared to when they are inactive, and intact microbial communities in C. taxifolia sediments have positive feedbacks by increasing fragment growth 200%. Thus, similar to terrestrial ecosystems, microorganisms appear to indirectly control the success of invasive macrophytes in marine ecosystems.
Collapse
Affiliation(s)
- Paul E Gribben
- Centre for Marine Bio-Innovation, and School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, 2052, Australia. .,Sydney Institute of Marine Science, 19 Chowder Bay Road, Mosman, NSW 2088, Australia.
| | - Shaun Nielsen
- Centre for Marine Bio-Innovation, and School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, 2052, Australia
| | - Justin R Seymour
- Plant Functional Biology and Climate Change Cluster, University of Technology, Sydney, 2007, Australia
| | - Daniel J Bradley
- School of Life Sciences, University of Technology, Sydney, 2007, Australia
| | - Matthew N West
- Sydney Institute of Marine Science, 19 Chowder Bay Road, Mosman, NSW 2088, Australia
| | - Torsten Thomas
- Centre for Marine Bio-Innovation, and School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, 2052, Australia
| |
Collapse
|
13
|
Moore JW, Olden JD. Response diversity, nonnative species, and disassembly rules buffer freshwater ecosystem processes from anthropogenic change. GLOBAL CHANGE BIOLOGY 2017; 23:1871-1880. [PMID: 27761971 DOI: 10.1111/gcb.13536] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 08/11/2016] [Accepted: 08/30/2016] [Indexed: 06/06/2023]
Abstract
Integrating knowledge of environmental degradation, biodiversity change, and ecosystem processes across large spatial scales remains a key challenge to illuminating the resilience of earth's systems. There is now a growing realization that the manner in which communities will respond to anthropogenic impacts will ultimately control the ecosystem consequences. Here, we examine the response of freshwater fishes and their nutrient excretion - a key ecosystem process that can control aquatic productivity - to human land development across the contiguous United States. By linking a continental-scale dataset of 533 fish species from 8100 stream locations with species functional traits, nutrient excretion, and land remote sensing, we present four key findings. First, we provide the first geographic footprint of nutrient excretion by freshwater fishes across the United States and reveal distinct local- and continental-scale heterogeneity in community excretion rates. Second, fish species exhibited substantial response diversity in their sensitivity to land development; for native species, the more tolerant species were also the species contributing greater ecosystem function in terms of nutrient excretion. Third, by modeling increased land-use change and resultant shifts in fish community composition, land development is estimated to decrease fish nutrient excretion in the majority (63%) of ecoregions. Fourth, the loss of nutrient excretion would be 28% greater if biodiversity loss was random or 84% greater if there were no nonnative species. Thus, ecosystem processes are sensitive to increased anthropogenic degradation but biotic communities provide multiple pathways for resistance and this resistance varies across space.
Collapse
Affiliation(s)
- Jonathan W Moore
- Earth to Ocean Research Group, Simon Fraser University, Burnaby, BC, Canada
| | - Julian D Olden
- School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA, USA
| |
Collapse
|
14
|
Uyà M, Maggi E, Mori G, Nuccio C, Gribben PE, Bulleri F. Carry over effects of nutrient addition on the recovery of an invasive seaweed from the winter die-back. MARINE ENVIRONMENTAL RESEARCH 2017; 126:37-44. [PMID: 28237887 DOI: 10.1016/j.marenvres.2017.02.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 02/06/2017] [Accepted: 02/17/2017] [Indexed: 06/06/2023]
Abstract
Nutrient enrichment of coastal waters can enhance the invasibility and regrowth of non-native species. The invasive alga Caulerpa cylindracea has two distinct phases: a well-studied fast-growing summer phase, and a winter latent phase. To investigate the effects of nutrient enrichment on the regrowth of the seaweed after the winter resting-phase, a manipulative experiment was carried out in intertidal rockpools in the North-western Mediterranean. Nutrients were supplied under different temporal regimes: press (constant release from January to May), winter pulse (January to March) and spring pulse (March to May). Independently from the temporal characteristics of their addition, nutrients accelerated the re-growth of C. cylindracea after the winter die-back, resulting in increased percentage covers at the peak of the growing season. Nutrient addition did not influence the number and length of fronds and the biomass. Native components of the algal community did not respond to nutrient additions. Our results show that nutrient supply can favour the spread of C. cylindracea even when occurring at a time of the year at which the seaweed is not actively growing.
Collapse
Affiliation(s)
- Marc Uyà
- Dipartimento di Biologia, Università di Pisa, Via Derna 1, 56126 Pisa, Italy; Centre for Marine Bio-Innovation, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney 2052, Australia.
| | - Elena Maggi
- Dipartimento di Biologia, Università di Pisa, Via Derna 1, 56126 Pisa, Italy; CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Piazzale Flaminio 9, 00196 Roma, Italy
| | - Giovanna Mori
- Dipartimento di Biologia, Università di Firenze, Via Micheli 1, 50121 Firenze, Italy
| | - Caterina Nuccio
- Dipartimento di Biologia, Università di Firenze, Via Micheli 1, 50121 Firenze, Italy
| | - Paul E Gribben
- Centre for Marine Bio-Innovation, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney 2052, Australia
| | - Fabio Bulleri
- Dipartimento di Biologia, Università di Pisa, Via Derna 1, 56126 Pisa, Italy; CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Piazzale Flaminio 9, 00196 Roma, Italy
| |
Collapse
|
15
|
A few is enough: a low cover of a non-native seaweed reduces the resilience of Mediterranean macroalgal stands to disturbances of varying extent. Biol Invasions 2017. [DOI: 10.1007/s10530-017-1442-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
16
|
Theuerkauf SJ, Puckett BJ, Theuerkauf KW, Theuerkauf EJ, Eggleston DB. Density-dependent role of an invasive marsh grass, Phragmites australis, on ecosystem service provision. PLoS One 2017; 12:e0173007. [PMID: 28235024 PMCID: PMC5325552 DOI: 10.1371/journal.pone.0173007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 02/12/2017] [Indexed: 11/19/2022] Open
Abstract
Invasive species can positively, neutrally, or negatively affect the provision of ecosystem services. The direction and magnitude of this effect can be a function of the invaders’ density and the service(s) of interest. We assessed the density-dependent effect of an invasive marsh grass, Phragmites australis, on three ecosystem services (plant diversity and community structure, shoreline stabilization, and carbon storage) in two oligohaline marshes within the North Carolina Coastal Reserve and National Estuarine Research Reserve System (NCNERR), USA. Plant species richness was equivalent among low, medium and high Phragmites density plots, and overall plant community composition did not vary significantly by Phragmites density. Shoreline change was most negative (landward retreat) where Phragmites density was highest (-0.40 ± 0.19 m yr-1 vs. -0.31 ± 0.10 for low density Phragmites) in the high energy marsh of Kitty Hawk Woods Reserve and most positive (soundward advance) where Phragmites density was highest (0.19 ± 0.05 m yr-1 vs. 0.12 ± 0.07 for low density Phragmites) in the lower energy marsh of Currituck Banks Reserve, although there was no significant effect of Phragmites density on shoreline change. In Currituck Banks, mean soil carbon content was approximately equivalent in cores extracted from low and high Phragmites density plots (23.23 ± 2.0 kg C m-3 vs. 22.81 ± 3.8). In Kitty Hawk Woods, mean soil carbon content was greater in low Phragmites density plots (36.63 ± 10.22 kg C m-3) than those with medium (13.99 ± 1.23 kg C m-3) or high density (21.61 ± 4.53 kg C m-3), but differences were not significant. These findings suggest an overall neutral density-dependent effect of Phragmites on three ecosystem services within two oligohaline marshes in different environmental settings within a protected reserve system. Moreover, the conceptual framework of this study can broadly inform an ecosystem services-based approach to invasive species management.
Collapse
Affiliation(s)
- Seth J. Theuerkauf
- Department of Marine, Earth and Atmospheric Sciences, Center for Marine Sciences and Technology, North Carolina State University, Morehead City, North Carolina, United States of America
- * E-mail:
| | - Brandon J. Puckett
- North Carolina Coastal Reserve and National Estuarine Research Reserve, Beaufort, North Carolina, United States of America
| | - Kathrynlynn W. Theuerkauf
- Department of Marine, Earth and Atmospheric Sciences, Center for Marine Sciences and Technology, North Carolina State University, Morehead City, North Carolina, United States of America
| | - Ethan J. Theuerkauf
- Illinois State Geological Survey, University of Illinois at Urbana-Champaign, Champaign, Illinois, United States of America
| | - David B. Eggleston
- Department of Marine, Earth and Atmospheric Sciences, Center for Marine Sciences and Technology, North Carolina State University, Morehead City, North Carolina, United States of America
| |
Collapse
|
17
|
Nydam ML, Giesbrecht KB, Stephenson EE. Origin and Dispersal History of Two Colonial Ascidian Clades in the Botryllus schlosseri Species Complex. PLoS One 2017; 12:e0169944. [PMID: 28107476 PMCID: PMC5249052 DOI: 10.1371/journal.pone.0169944] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 12/27/2016] [Indexed: 11/28/2022] Open
Abstract
Human-induced global warming and species introductions are rapidly altering the composition and functioning of Earth’s marine ecosystems. Ascidians (Phylum Chordata, Subphylum Tunicata, Class Ascidiacea) are likely to play an increasingly greater role in marine communities. The colonial ascidian B. schlosseri is a cryptic species complex comprising five genetically divergent clades (A-E). Clade A is a global species, and Clade E has so far been identified in European waters only. Using the largest mitochondrial cytochrome oxidase I datasets yet assembled, we determine the origin and dispersal history of these species. Nucleotide diversity and Approximate Bayesian Computation analyses support a Pacific origin for Clade A, with two likely dispersal scenarios that both show the northwestern Atlantic populations establishing early in the history of the species. Both Discrete Phylogeographic Analysis and Approximate Bayesian Computation support an origin of Clade E on the French side of the English Channel. An unsampled lineage evolved from the French lineage, which reflects the conclusion from the median joining network that not all Clade E lineages have been sampled. This unsampled lineage gave rise to the haplotypes on the English side of the English Channel, which were the ancestors to the Mediterranean and Bay of Biscay populations. Clade E has a wider geographic range than previously thought, and shows evidence of recent range expansion. Both Clade A and Clade E should be considered widespread species: Clade A globally and Clade E within Europe.
Collapse
Affiliation(s)
- Marie L. Nydam
- Division of Science and Mathematics, Centre College, Danville, Kentucky, United States of America
- * E-mail:
| | - Kirsten B. Giesbrecht
- Division of Science and Mathematics, Centre College, Danville, Kentucky, United States of America
| | - Emily E. Stephenson
- Division of Science and Mathematics, Centre College, Danville, Kentucky, United States of America
| |
Collapse
|
18
|
Zwerschke N, Emmerson MC, Roberts D, O'Connor NE. Benthic assemblages associated with native and non-native oysters are similar. MARINE POLLUTION BULLETIN 2016; 111:305-310. [PMID: 27377003 DOI: 10.1016/j.marpolbul.2016.06.094] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 06/26/2016] [Accepted: 06/27/2016] [Indexed: 05/28/2023]
Abstract
Invasive species can impact native species and alter assemblage structure, which affects associated ecosystem functioning. The pervasive Pacific oyster, Crassostrea gigas, has been shown to affect the diversity and composition of many host ecosystems. We tested for effects of the presence of the invasive C. gigas on native assemblages by comparing them directly to assemblages associated with the declining native European oyster, Ostrea edulis. The presence of both oyster species was manipulated in intertidal and subtidal habitats and reefs were constructed at horizontal and vertical orientation to the substratum. After 12months, species diversity and benthic assemblage structure between assemblages with C. gigas and O. edulis were similar, but differed between habitats and orientation, suggesting that both oyster species were functionally similar in terms of biodiversity facilitation. These findings support evidence, that non-native species could play an important role in maintaining biodiversity in systems with declining populations of native species.
Collapse
Affiliation(s)
- Nadescha Zwerschke
- Queen's University Belfast Marine Laboratory, 12-13 The Strand, Portaferry BT22 1PF, Northern Ireland, United Kingdom.
| | - Mark C Emmerson
- Queen's University Belfast Marine Laboratory, 12-13 The Strand, Portaferry BT22 1PF, Northern Ireland, United Kingdom; Queen's University Belfast, School of Biological Sciences, Belfast BT9 7BL, Northern Ireland, United Kingdom.
| | - Dai Roberts
- Queen's University Belfast Marine Laboratory, 12-13 The Strand, Portaferry BT22 1PF, Northern Ireland, United Kingdom; Queen's University Belfast, School of Biological Sciences, Belfast BT9 7BL, Northern Ireland, United Kingdom.
| | - Nessa E O'Connor
- Queen's University Belfast Marine Laboratory, 12-13 The Strand, Portaferry BT22 1PF, Northern Ireland, United Kingdom; Queen's University Belfast, School of Biological Sciences, Belfast BT9 7BL, Northern Ireland, United Kingdom.
| |
Collapse
|
19
|
Bulleri F, Badalamenti F, Iveša L, Mikac B, Musco L, Jaklin A, Rattray A, Vega Fernández T, Benedetti-Cecchi L. The effects of an invasive seaweed on native communities vary along a gradient of land-based human impacts. PeerJ 2016; 4:e1795. [PMID: 27014513 PMCID: PMC4806595 DOI: 10.7717/peerj.1795] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 02/21/2016] [Indexed: 11/20/2022] Open
Abstract
The difficulty in teasing apart the effects of biological invasions from those of other anthropogenic perturbations has hampered our understanding of the mechanisms underpinning the global biodiversity crisis. The recent elaboration of global-scale maps of cumulative human impacts provides a unique opportunity to assess how the impact of invaders varies among areas exposed to different anthropogenic activities. A recent meta-analysis has shown that the effects of invasive seaweeds on native biota tend to be more negative in relatively pristine than in human-impacted environments. Here, we tested this hypothesis through the experimental removal of the invasive green seaweed, Caulerpa cylindracea, from rocky reefs across the Mediterranean Sea. More specifically, we assessed which out of land-based and sea-based cumulative impact scores was a better predictor of the direction and magnitude of the effects of this seaweed on extant and recovering native assemblages. Approximately 15 months after the start of the experiment, the removal of C. cylindracea from extant assemblages enhanced the cover of canopy-forming macroalgae at relatively pristine sites. This did not, however, result in major changes in total cover or species richness of native assemblages. Preventing C. cylindracea re-invasion of cleared plots at pristine sites promoted the recovery of canopy-forming and encrusting macroalgae and hampered that of algal turfs, ultimately resulting in increased species richness. These effects weakened progressively with increasing levels of land-based human impacts and, indeed, shifted in sign at the upper end of the gradient investigated. Thus, at sites exposed to intense disturbance from land-based human activities, the removal of C. cylindracea fostered the cover of algal turfs and decreased that of encrusting algae, with no net effect on species richness. Our results suggests that competition from C. cylindracea is an important determinant of benthic assemblage diversity in pristine environments, but less so in species-poor assemblages found at sites exposed to intense disturbance from land-based human activities, where either adverse physical factors or lack of propagules may constrain the number of potential native colonizers. Implementing measures to reduce the establishment and spread of C. cylindracea in areas little impacted by land-based human activities should be considered a priority for preserving the biodiversity of Mediterranean shallow rocky reefs.
Collapse
Affiliation(s)
- Fabio Bulleri
- Department of Biology, University of Pisa , Pisa , Italy
| | - Fabio Badalamenti
- CNR-IAMC, Istituto per l'Ambiente Marino Costiero , Castellammare del Golfo , Italy
| | - Ljiljana Iveša
- Ruđer Bošković Institute, Center for Marine Research, G. Paliaga , Rovinj , Croatia
| | - Barbara Mikac
- CNR-IAMC, Istituto per l'Ambiente Marino Costiero , Castellammare del Golfo , Italy
| | - Luigi Musco
- CNR-IAMC, Istituto per l'Ambiente Marino Costiero , Castellammare del Golfo , Italy
| | - Andrej Jaklin
- Ruđer Bošković Institute, Center for Marine Research, G. Paliaga , Rovinj , Croatia
| | - Alex Rattray
- Department of Biology, University of Pisa , Pisa , Italy
| | - Tomás Vega Fernández
- CNR-IAMC, Istituto per l'Ambiente Marino Costiero, Castellammare del Golfo, Italy; Stazione Zoologica Anton Dohrn, Napoli, Italy
| | | |
Collapse
|
20
|
Gribben PE, Simpson M, Wright JT. Relationships between an invasive crab, habitat availability and intertidal community structure at biogeographic scales. MARINE ENVIRONMENTAL RESEARCH 2015; 110:124-131. [PMID: 26322856 DOI: 10.1016/j.marenvres.2015.08.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 08/12/2015] [Accepted: 08/15/2015] [Indexed: 06/04/2023]
Abstract
At local scales, habitat availability influences interactions between native and invasive species. Habitat availability may also predict patterns in native communities and invasive species at biogeographic scales when both native and invasive species have specific habitat requirements. The New Zealand porcelain crab, Petrolisthes elongatus, has invaded intertidal rocky shores around Tasmania, Australia, where it is found in high densities (>1800 m(2)) under rocks. A hierarchical sampling approach was used to investigate 1) the relationship between habitat availability (rock cover) and the biomass and abundance of P. elongatus, and 2) the relationship between P. elongatus biomass and native communities at local and regional scales. Invertebrate communities and habitat availability were sampled at multiple sites in the north and south regions of Tasmania. P. elongatus biomass and abundance were positively correlated with rock cover and patterns were consistent at the biogeographic scale (between regions). P. elongatus biomass was positively correlated with native species richness, biomass and abundance highlighting their co-dependence on rock cover. However, multivariate analyses indicated a different native community structure with increasing P. elongatus biomass. Flat, strongly adhering gastropods (chitons and limpets) were positively correlated with P. elongatus biomass, whereas mobile gastropods and crabs were negatively correlated with P. elongatus biomass. Despite local scale variation, there were clear consistent relationships between habitat-availability and the biomass of P. elongatus, and between native communities and the biomass of P. elongatus suggesting that the relationships between native and invasive species may be predictable at large spatial scales. Moreover, the strong relationships between P. elongatus biomass and changes in native community structure suggest a greater understanding of its impact is needed so that appropriate management plans can be developed.
Collapse
Affiliation(s)
- Paul E Gribben
- Plant Functional Biology and Climate Change Cluster, School of the Environment, University of Technology, Sydney, P.O. Box 123, Broadway, NSW 2007, Australia; Centre for Marine Bio-Innovation, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney 2052, Australia.
| | - Michael Simpson
- Centre for Marine Bio-Innovation, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney 2052, Australia
| | - Jeffrey T Wright
- Institute for Marine and Antarctic Studies, University of Tasmania, P.O. Box 986, Launceston 7250, Australia
| |
Collapse
|
21
|
Lanham BS, Gribben PE, Poore AGB. Beyond the border: effects of an expanding algal habitat on the fauna of neighbouring habitats. MARINE ENVIRONMENTAL RESEARCH 2015; 106:10-8. [PMID: 25749309 DOI: 10.1016/j.marenvres.2015.02.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 02/12/2015] [Accepted: 02/23/2015] [Indexed: 06/04/2023]
Abstract
The impacts of novel habitat-forming organisms on associated fauna have been difficult to predict, and may affect the fauna of neighbouring habitats due to changes in the spatial configuration of habitat patches of differing quality. Here, we test whether the localised expansion of a native habitat-forming macroalga, Caulerpa filiformis, on subtidal reefs can affect the abundance of fauna associated with a neighbouring macroalgal habitat. C. filiformis was a functionally distinct habitat for fauna, and the total abundance of epifauna associated with the resident alga, Sargassum linearifolium, was reduced at some sites when in close proximity to or surrounded by C. filiformis. Experimental manipulation of habitat configuration demonstrated that the low abundance of gastropods on S. linearifolium when surrounded by C. filiformis was likely explained by C. filiformis acting as a physical dispersal barrier for mobile fauna. Changes to the spatial configuration of novel and resident habitats can thus affect the abundance of fauna in addition to the direct replacement of habitats by species undergoing range expansions or increasing in abundance.
Collapse
Affiliation(s)
- Brendan S Lanham
- Evolution & Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Paul E Gribben
- Plant Functional Biology and Climate Change Cluster, School of the Environment, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Alistair G B Poore
- Evolution & Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| |
Collapse
|
22
|
Spillover of Secondary Foundation Species Transforms Community Structure and Accelerates Decomposition in Oak Savannas. Ecosystems 2015. [DOI: 10.1007/s10021-015-9862-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
23
|
|
24
|
|
25
|
Nogaro G, Steinman AD. Influence of ecosystem engineers on ecosystem processes is mediated by lake sediment properties. OIKOS 2013. [DOI: 10.1111/j.1600-0706.2013.00978.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
26
|
Gribben PE, Wright JT. Habitat-former effects on prey behaviour increase predation and non-predation mortality. J Anim Ecol 2013; 83:388-96. [DOI: 10.1111/1365-2656.12139] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 08/28/2013] [Indexed: 11/27/2022]
Affiliation(s)
- Paul E. Gribben
- Plant Functional Biology and Climate Change Cluster; School of the Environment; University of Technology; Sydney NSW 2007 Australia
| | - Jeffrey T. Wright
- National Centre for Marine Conservation and Resource Sustainability; Australian Maritime College; University of Tasmania; P.O. Box 986 Launceston Tas. 7250 Australia
| |
Collapse
|