1
|
Guo P, Lin Y, Sheng Y, Gu X, Deng Y, Zhang Y, Wang W, Wang M. Comparison of the coexistence pattern of mangrove macrobenthos between natural and artificial reforestation. Ecol Evol 2024; 14:e70069. [PMID: 39091331 PMCID: PMC11289789 DOI: 10.1002/ece3.70069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 06/30/2024] [Accepted: 07/11/2024] [Indexed: 08/04/2024] Open
Abstract
The abandoned pond-to-mangrove restoration project provides greater advantages than tidal flats afforestation in restoring mangrove ecosystem services and will be the primary method for mangrove restoration in the future. The existing methods for abandoned pond-to-mangrove restoration include artificial restoration through 'dike-breaking, filling with imported soil and tree planting' and natural restoration through 'dike-breaking and natural succession'. However, little is known about which restoration strategy (natural or artificial restoration) provides more benefits to the biodiversity of mangrove macrobethos. Given a prevailing view suggested that artificial restoration should be the preferred approach for accelerating recovery of biodiversity and vegetation structure in tropical regions, we hypothesised higher macrobenthic biodiversity and more complex community structure in artificial restoration than in natural restoration. To test this hypothesis, macrobenthic biodiversity and ecological processes were monitored in a typical abandoned pond-to-mangrove area of Dongzhaigang Bay, China, where artificial and natural restoration methods were used concurrently. Differences in macrobenthic biodiversity, community structure and ecological processes were compared using diversity indices, complex network analysis and null models. Similar species composition and ecological niche overlap and width among macrobenthos were observed at artificial and natural restoration sites. The biotic heterogeneity and interaction among macrobenthos were higher at the natural restoration sites than at the artificial restoration sites. Macrobenthos community assembly at natural and artificial restoration sites was both determined by deterministic processes, with environmental filtering dominating, which explained 52% and 54% of the variations in macrobenthic community structures respectively. Although our findings did not validate the research hypothesis, higher biotic heterogeneity and species interaction among macrobenthos could support natural restoration as the primary method for abandoned pond-to-mangrove projects, because it is a nature-based solution for mangrove restoration.
Collapse
Affiliation(s)
- Pingping Guo
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment & EcologyXiamen UniversityXiamenChina
- Zhangjiang Estuary Mangrove Wetland Ecosystem Station, National Observation and Research Station for the Taiwan Strait Marine EcosystemXiamen UniversityZhangzhouChina
| | - Yufeng Lin
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment & EcologyXiamen UniversityXiamenChina
- Zhangjiang Estuary Mangrove Wetland Ecosystem Station, National Observation and Research Station for the Taiwan Strait Marine EcosystemXiamen UniversityZhangzhouChina
| | - Yifei Sheng
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment & EcologyXiamen UniversityXiamenChina
- Zhangjiang Estuary Mangrove Wetland Ecosystem Station, National Observation and Research Station for the Taiwan Strait Marine EcosystemXiamen UniversityZhangzhouChina
| | - Xuan Gu
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment & EcologyXiamen UniversityXiamenChina
- Zhangjiang Estuary Mangrove Wetland Ecosystem Station, National Observation and Research Station for the Taiwan Strait Marine EcosystemXiamen UniversityZhangzhouChina
| | - Yijuan Deng
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment & EcologyXiamen UniversityXiamenChina
- Zhangjiang Estuary Mangrove Wetland Ecosystem Station, National Observation and Research Station for the Taiwan Strait Marine EcosystemXiamen UniversityZhangzhouChina
| | - Yamian Zhang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment & EcologyXiamen UniversityXiamenChina
- Zhangjiang Estuary Mangrove Wetland Ecosystem Station, National Observation and Research Station for the Taiwan Strait Marine EcosystemXiamen UniversityZhangzhouChina
| | - Wenqing Wang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment & EcologyXiamen UniversityXiamenChina
- Zhangjiang Estuary Mangrove Wetland Ecosystem Station, National Observation and Research Station for the Taiwan Strait Marine EcosystemXiamen UniversityZhangzhouChina
| | - Mao Wang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment & EcologyXiamen UniversityXiamenChina
- Zhangjiang Estuary Mangrove Wetland Ecosystem Station, National Observation and Research Station for the Taiwan Strait Marine EcosystemXiamen UniversityZhangzhouChina
| |
Collapse
|
2
|
Huang C, Xu Y, Zang R. Low functional redundancy revealed high vulnerability of the subtropical evergreen broadleaved forests to environmental change. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 935:173307. [PMID: 38777067 DOI: 10.1016/j.scitotenv.2024.173307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/21/2024] [Accepted: 05/15/2024] [Indexed: 05/25/2024]
Abstract
Anthropogenic-induced environmental changes threaten forest ecosystems by reducing their biodiversity and adaptive capacity. Understanding the sensitivity of ecosystem function to loss of diversity is vital in designing conservation strategies and maintaining the resilience of forest ecosystems in a changing world. Here, based on unique combinations of ten functional traits (termed as functional entities; FEs), we quantified the metrics of functional redundancy (FR) and functional vulnerability (FV) in 250 forest plots across five locations in subtropical evergreen broadleaved forests. We then examined the potential impacts of species loss on functional diversity in subtropical forest communities along environmental gradients (climate and soil). Results showed that the subtropical forests displayed a low level of functional redundancy (FR < 2). Over 75 % of the FEs in these subtropical forest communities were composed of only one species, with rare species emerging as pivotal contributors to these vulnerable FEs. The number of FEs and functional redundancy both increased with the rise in species richness, but functional vulnerability decreased with increasing species richness. Climatic factors, especially mean diurnal range, played crucial roles in determining the functions that the forest ecosystem delivers. Under variable temperature conditions, species in each plot were packed into a few FEs, leading to higher functional redundancy and lower functional vulnerability. These results highlighted that rare species contribute significantly to ecosystem functions and the highly diverse subtropical forest communities could show more insurance effects against species loss under stressful environmental conditions.
Collapse
Affiliation(s)
- Caishuang Huang
- School of Ecology and Environment, Southwest Forestry University, Kunming 650224, China
| | - Yue Xu
- Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China; Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
| | - Runguo Zang
- Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China; Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China.
| |
Collapse
|
3
|
Chen G, Gu X, Mo Y, Cui B. Monospecific mangrove reforestation changes relationship between benthic mollusc diversity and biomass: Implication for coastal wetland management. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 353:120140. [PMID: 38290263 DOI: 10.1016/j.jenvman.2024.120140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 11/24/2023] [Accepted: 01/18/2024] [Indexed: 02/01/2024]
Abstract
Anthropogenic causes are overtaking natural factors to reshape patterns of biodiversity and ecosystem functioning. Mangrove reforestation aimed at reversing losses of mangroves has been conducted worldwide for several decades. However, how reforestation influences the link between ecological processes that shape community diversity and the consequent effects on ecosystem functions such as biomass production is less well known. Here we used data collected before and after mangrove planting to examine the effects of reforestation on molluscan species richness and biomass production by testing the changes in species richness, compositional similarities, distance-decay effects (community similarity decreases with increasing geographical distance) in metacommunity across a regional scale of 480 km (23-27 °N) in southeast Chinese coasts. Additionally, we further detected the impact of landscape configuration caused by different intensities of reforestation on the mollusc community. After the mangrove reforestation, mollusc species richness and biomass increased significantly. The increases in species richness and biomass of mollusc community were mediated by reducing distance-decay effect, indicating an increase in relationship strength between species richness and biomass might be associated with a decrease in distance-decay effect with rising mangrove habitat. We highlight the importance of considering the effects of anthropogenic changes on the relationship between biodiversity and ecosystem functioning. Quantifying the distance-decay effect of these influences enables management decisions about coastal restoration to be based upon ecological mechanisms rather than wishful thinking or superficial appearance.
Collapse
Affiliation(s)
- Guogui Chen
- State Key Laboratory of Water Environmental Simulation, School of Environment, Beijing Normal University, Beijing, China; Research and Development Center for Watershed Environmental Eco-Engineering, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, China
| | - Xuan Gu
- Key Laboratory of the Coastal and Wetland Ecosystems (Xiamen University) Ministry of Education, College of the Environment & Ecology, Xiamen University, CN-361102, Xiamen, Fujian, China
| | - Yuanyuan Mo
- Aquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Fujian Key Laboratory of Watershed Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Key Laboratory of Urban Environment and Health, Ningbo Urban Environment Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo, 315830, China.
| | - Baoshan Cui
- State Key Laboratory of Water Environmental Simulation, School of Environment, Beijing Normal University, Beijing, China; Research and Development Center for Watershed Environmental Eco-Engineering, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, China.
| |
Collapse
|
4
|
Abd Rahim NH, Cannicci S, Ibrahim YS, Not C, Idris I, Mohd Jani J, Dahdouh-Guebas F, Satyanarayana B. Commercially important mangrove crabs are more susceptible to microplastic contamination than other brachyuran species. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166271. [PMID: 37586534 DOI: 10.1016/j.scitotenv.2023.166271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 07/27/2023] [Accepted: 08/11/2023] [Indexed: 08/18/2023]
Abstract
Brachyuran crabs are ecologically and economically important macrofauna in mangrove habitats. However, they are exposed to various contaminants, including plastics, which bioaccumulate in relation to their feeding modes. Setiu Wetlands is a unique place on the east coast of Peninsular Malaysia where different ecosystems such as mangroves, lagoon, beaches, etc., are duly connected and influencing each other. In recent years, the shifted river mouth has threatened these wetlands, causing severe hydrodynamic changes in the lagoon, especially in the core mangrove zone. The present study tested microplastics (MPs) contamination in the mangroves through brachyuran crabs as indicators. Three sampling sites, namely Pulau Layat, Kampung Pengkalan Gelap, and Pulau Sutung were chosen. The four abundant crab species Parasesarma eumolpe, Metaplax elegans, Austruca annulipes, and Scylla olivacea, which display different feeding behaviours were collected from all sites covering the dry (Feb-Mar 2021) and the wet (Dec 2021-Jan 2022) seasonal periods. There were significant differences in the seasonal abundance of MPs among crab species. The highest accumulation of MPs in the crab stomachs in the dry season could be linked to subdued water circulation and poor material dispersion. Besides the lower MPs in the wet period due to improved water exchange conditions, its significant presence in the stomachs of S. olivacea indicates the role of its feeding behaviour as a carnivore. In addition, the micro-Fourier transform infrared spectroscopy (micro-FTIR) revealed the widespread occurrence of polymers such as rayon and polyester in all species across the sites. Given the fact that crabs like S. olivacea are commercially important and the ones contaminated with MPs can cause detrimental effects on the local community's health, further managerial actions are needed to assure sustainable management of the Setiu Wetlands.
Collapse
Affiliation(s)
- Nur Hannah Abd Rahim
- Mangrove Research Unit (MARU), Institute of Oceanography and Environment (INOS), Universiti Malaysia Terengganu (UMT), Kuala Nerus 21300, Malaysia.
| | - Stefano Cannicci
- Department of Biology, University of Florence, 50019 Florence, Italy; Swire Institute for Marine Science, The University of Hong Kong, Hong Kong; Mangrove Specialist Group (MSG), Species Survival Commission (SSC), International Union for the Conservation of Nature (IUCN), c/o Zoological Society of London, London, United Kingdom
| | - Yusof Shuaib Ibrahim
- Mangrove Research Unit (MARU), Institute of Oceanography and Environment (INOS), Universiti Malaysia Terengganu (UMT), Kuala Nerus 21300, Malaysia; Microplastic Research Interest Group (MRIG), Faculty of Science and Marine Environment, Universiti Malaysia Terengganu (UMT), Kuala Nerus 21300, Malaysia
| | - Christelle Not
- Environmental Geochemistry & Oceanography Research Group, Department of Earth Sciences, The University of Hong Kong, Hong Kong
| | - Izwandy Idris
- Mangrove Research Unit (MARU), Institute of Oceanography and Environment (INOS), Universiti Malaysia Terengganu (UMT), Kuala Nerus 21300, Malaysia; South China Sea Repository and Reference Centre, Institute of Oceanography and Environment (INOS), Universiti Malaysia Terengganu (UMT), Kuala Nerus 21300, Malaysia
| | - Jarina Mohd Jani
- Mangrove Research Unit (MARU), Institute of Oceanography and Environment (INOS), Universiti Malaysia Terengganu (UMT), Kuala Nerus 21300, Malaysia; Biodiversity Conservation and Management Program, Faculty of Science and Marine Environment, Universiti Malaysia Terengganu (UMT), Kuala Nerus 21300, Malaysia
| | - Farid Dahdouh-Guebas
- Mangrove Specialist Group (MSG), Species Survival Commission (SSC), International Union for the Conservation of Nature (IUCN), c/o Zoological Society of London, London, United Kingdom; Systems Ecology and Resource Management Research Unit (SERM), Université Libre de Bruxelles-ULB, 1050 Brussels, Belgium; Ecology & Biodiversity Research Unit, Department of Biology, Vrije Universiteit Brussel-VUB, 1050 Brussels, Belgium
| | - Behara Satyanarayana
- Mangrove Research Unit (MARU), Institute of Oceanography and Environment (INOS), Universiti Malaysia Terengganu (UMT), Kuala Nerus 21300, Malaysia; Mangrove Specialist Group (MSG), Species Survival Commission (SSC), International Union for the Conservation of Nature (IUCN), c/o Zoological Society of London, London, United Kingdom; Systems Ecology and Resource Management Research Unit (SERM), Université Libre de Bruxelles-ULB, 1050 Brussels, Belgium.
| |
Collapse
|
5
|
Catching the Drift of Marine Invertebrate Diversity through Digital Repositories—A Case Study of the Mangroves and Seagrasses of Maputo Bay, Mozambique. DIVERSITY 2023. [DOI: 10.3390/d15020242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Mangroves and seagrasses present with high marine macroinvertebrate biodiversity that contributes to their structure and functioning. Macroinvertebrates possess a broad range of functional traits, making them excellent models for biodiversity and available-trait-based studies. This study aimed to characterize the biodiversity of marine macroinvertebrates as two different ecosystems situated along the coastline of Maputo Bay by compiling dispersed data from online databases. Specifically, this study addressed species richness, taxonomic and functional diversity based on two traits (habitat occupation and trophic guild), and the community structure of these traits. Mangroves presented with a higher species richness and taxonomic diversity than seagrasses. The functional diversity of mangroves was mostly explained by the trophic guild trait. In the case of seagrasses, functional diversity was mostly due to differences in habitat occupation in the 20th century, but the trophic guild accounted for this functional diversity from 2000 onwards. The comparison of community compositions between the two ecosystems showed low or no similarity. The use of digital databases revealed some limitations, mostly regarding the sampling methods and individual counts. The trends and data gaps presented in this study can be further used to inform subsequent systematic data acquisition and support the development of future research. A further step that may be taken to improve the use of digital data in future biodiversity studies is to fully incorporate functional traits, abundance and sampling methods into online databases.
Collapse
|
6
|
Dahdouh-Guebas F, Friess DA, Lovelock CE, Connolly RM, Feller IC, Rogers K, Cannicci S. Cross-cutting research themes for future mangrove forest research. NATURE PLANTS 2022; 8:1131-1135. [PMID: 36241736 DOI: 10.1038/s41477-022-01245-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Affiliation(s)
- Farid Dahdouh-Guebas
- Systems Ecology and Resource Management Research Unit (SERM), Department of Organism Biology, Université Libre de Bruxelles - ULB, Brussels, Belgium.
- Ecology & Biodiversity, Laboratory of Plant Biology and Nature Management, Biology Department, Vrije Universiteit Brussel - VUB, Brussels, Belgium.
- Mangrove Specialist Group (MSG), Species Survival Commission (SSC), International Union for the Conservation of Nature (IUCN), Zoological Society of London, London, UK.
- Interfaculty Institute of Social-Ecological Transitions, Université Libre de Bruxelles - ULB, Brussels, Belgium.
| | - Daniel A Friess
- Mangrove Specialist Group (MSG), Species Survival Commission (SSC), International Union for the Conservation of Nature (IUCN), Zoological Society of London, London, UK
- Department of Geography, National University of Singapore, Singapore, Singapore
- Centre for Nature-based Climate Solutions, National University of Singapore, Singapore, Singapore
| | - Catherine E Lovelock
- Mangrove Specialist Group (MSG), Species Survival Commission (SSC), International Union for the Conservation of Nature (IUCN), Zoological Society of London, London, UK
- School of Biological Sciences, The University of Queensland, St Lucia, Queensland, Australia
| | - Rod M Connolly
- Coastal and Marine Research Centre, Australian Rivers Institute, School of Environment and Science, Griffith University, Gold Coast, Queensland, Australia
| | - Ilka C Feller
- Mangrove Specialist Group (MSG), Species Survival Commission (SSC), International Union for the Conservation of Nature (IUCN), Zoological Society of London, London, UK
- Smithsonian Environmental Research Center, Edgewater, MD, USA
| | - Kerrylee Rogers
- School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, New South Wales, Australia
| | - Stefano Cannicci
- Mangrove Specialist Group (MSG), Species Survival Commission (SSC), International Union for the Conservation of Nature (IUCN), Zoological Society of London, London, UK
- Department of Biology, University of Florence, Sesto Fiorentino, Italy
- Swire Institute of Marine Science, The University of Hong Kong, Hong Kong, Hong Kong, China
| |
Collapse
|
7
|
Graco‐Roza C, Aarnio S, Abrego N, Acosta ATR, Alahuhta J, Altman J, Angiolini C, Aroviita J, Attorre F, Baastrup‐Spohr L, Barrera‐Alba JJ, Belmaker J, Biurrun I, Bonari G, Bruelheide H, Burrascano S, Carboni M, Cardoso P, Carvalho JC, Castaldelli G, Christensen M, Correa G, Dembicz I, Dengler J, Dolezal J, Domingos P, Erös T, Ferreira CEL, Filibeck G, Floeter SR, Friedlander AM, Gammal J, Gavioli A, Gossner MM, Granot I, Guarino R, Gustafsson C, Hayden B, He S, Heilmann‐Clausen J, Heino J, Hunter JT, Huszar VLM, Janišová M, Jyrkänkallio‐Mikkola J, Kahilainen KK, Kemppinen J, Kozub Ł, Kruk C, Kulbiki M, Kuzemko A, Christiaan le Roux P, Lehikoinen A, Teixeira de Lima D, Lopez‐Urrutia A, Lukács BA, Luoto M, Mammola S, Marinho MM, Menezes LS, Milardi M, Miranda M, Moser GAO, Mueller J, Niittynen P, Norkko A, Nowak A, Ometto JP, Ovaskainen O, Overbeck GE, Pacheco FS, Pajunen V, Palpurina S, Picazo F, Prieto JAC, Rodil IF, Sabatini FM, Salingré S, De Sanctis M, Segura AM, da Silva LHS, Stevanovic ZD, Swacha G, Teittinen A, Tolonen KT, Tsiripidis I, Virta L, Wang B, Wang J, Weisser W, Xu Y, Soininen J. Distance decay 2.0 - A global synthesis of taxonomic and functional turnover in ecological communities. GLOBAL ECOLOGY AND BIOGEOGRAPHY : A JOURNAL OF MACROECOLOGY 2022; 31:1399-1421. [PMID: 35915625 PMCID: PMC9322010 DOI: 10.1111/geb.13513] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 04/02/2022] [Accepted: 04/06/2022] [Indexed: 05/05/2023]
Abstract
AIM Understanding the variation in community composition and species abundances (i.e., β-diversity) is at the heart of community ecology. A common approach to examine β-diversity is to evaluate directional variation in community composition by measuring the decay in the similarity among pairs of communities along spatial or environmental distance. We provide the first global synthesis of taxonomic and functional distance decay along spatial and environmental distance by analysing 148 datasets comprising different types of organisms and environments. LOCATION Global. TIME PERIOD 1990 to present. MAJOR TAXA STUDIED From diatoms to mammals. METHOD We measured the strength of the decay using ranked Mantel tests (Mantel r) and the rate of distance decay as the slope of an exponential fit using generalized linear models. We used null models to test whether functional similarity decays faster or slower than expected given the taxonomic decay along the spatial and environmental distance. We also unveiled the factors driving the rate of decay across the datasets, including latitude, spatial extent, realm and organismal features. RESULTS Taxonomic distance decay was stronger than functional distance decay along both spatial and environmental distance. Functional distance decay was random given the taxonomic distance decay. The rate of taxonomic and functional spatial distance decay was fastest in the datasets from mid-latitudes. Overall, datasets covering larger spatial extents showed a lower rate of decay along spatial distance but a higher rate of decay along environmental distance. Marine ecosystems had the slowest rate of decay along environmental distances. MAIN CONCLUSIONS In general, taxonomic distance decay is a useful tool for biogeographical research because it reflects dispersal-related factors in addition to species responses to climatic and environmental variables. Moreover, functional distance decay might be a cost-effective option for investigating community changes in heterogeneous environments.
Collapse
|
8
|
O'Connell DP, Fusi M, Djamaluddin R, Rajagukguk BB, Bachmid F, Kitson JJN, Dunnett Z, Trianto A, Tjoa AB, Diele K, Evans DM. Assessing mangrove restoration practices using species‐interaction networks. Restor Ecol 2021. [DOI: 10.1111/rec.13546] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Darren P. O'Connell
- School of Biology and Environmental Science University College Dublin Dublin D04 N2E5 Ireland
- School of Natural and Environmental Sciences Newcastle University Newcastle Upon Tyne NE1 7RU UK
| | - Marco Fusi
- School of Applied Sciences Edinburgh Napier University Edinburg EH11 4BN U.K
| | - Rignolda Djamaluddin
- Faculty of Fisheries and Marine Science Sam Ratulangi University Manado North Sulawesi 95115 Indonesia
| | - Bulfrit B. Rajagukguk
- Faculty of Fisheries and Marine Science Sam Ratulangi University Manado North Sulawesi 95115 Indonesia
| | - Fihri Bachmid
- Faculty of Fisheries and Marine Science Sam Ratulangi University Manado North Sulawesi 95115 Indonesia
| | - James J. N. Kitson
- School of Natural and Environmental Sciences Newcastle University Newcastle Upon Tyne NE1 7RU UK
| | - Zoe Dunnett
- School of Natural and Environmental Sciences Newcastle University Newcastle Upon Tyne NE1 7RU UK
| | - Agus Trianto
- Faculty of Fisheries and Marine Sciences Diponegoro University Semarang Central Java 50275 Indonesia
| | - Aiyen B. Tjoa
- Faculty of Agriculture Tadulako University Palu Central Sulawesi 94148 Indonesia
| | - Karen Diele
- School of Applied Sciences Edinburgh Napier University Edinburg EH11 4BN U.K
| | - Darren M. Evans
- School of Natural and Environmental Sciences Newcastle University Newcastle Upon Tyne NE1 7RU UK
| |
Collapse
|
9
|
Satyanarayana B, Quispe-Zuniga MR, Hugé J, Sulong I, Mohd-Lokman H, Dahdouh-Guebas F. Mangroves Fueling Livelihoods: A Socio-Economic Stakeholder Analysis of the Charcoal and Pole Production Systems in the World’s Longest Managed Mangrove Forest. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.621721] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The declining mangrove cover worldwide highlights the necessity of understanding the linkages between ecological and socio-economic dimensions of mangrove management. This study analyses the socio-economic aspects of the pole and charcoal production systems at Matang Mangrove Forest Reserve (MMFR), known as the world’s longest managed mangrove forest, in Malaysia. We performed a socio-economic survey to identify the roles and relationships among stakeholders in the pole/charcoal production system and quantified the cash-flows in monetary value. Altogether, 160 interviews were conducted with contractors, forest officials, workers, middle-men, and consumers. The contractors are functioning as a “hub” from production to commercialization and receive major economic benefits. The commercialization of most charcoal (>80%) aims to its exportation to Japan while the commercialization of poles is local. Although the workers’ income was less than the minimum wage, they still prefer charcoal production jobs because of the availability and geographic proximity of these jobs. Our research suggests a standard salary and health insurance schemes for the workers to reduce social inequality/poverty and improve their well-being. Considering that mangroves occur in over 120 countries, our methodology can be used as a reference to unveil the socio-economic situation of mangrove-dependent communities as well as to map the economic cash-flow of the local activities that form the basis for long-term sustainable mangrove management plans.
Collapse
|
10
|
Differential Response of Macrobenthic Abundance and Community Composition to Mangrove Vegetation. FORESTS 2021. [DOI: 10.3390/f12101403] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The mass planting of mangroves has been proposed as a mitigation strategy to compensate for mangrove loss. However, the effects of mangrove vegetation on the abundance and community composition of macrobenthos remain controversial. The macrobenthic communities in four intact mangrove forests with different conditions and the adjacent nonvegetated mudflats of two mangrove species with distinct stand structures on the western coast of Taiwan were examined. Some macrobenthic taxa occurred only in the mangroves, suggesting macrobenthic critical habitats. Seasonal shift in community composition was more pronounced in the mudflats than in the mangroves, possibly due to the rich food supply, low temperature, and shelter function provided by mangrove forests. However, crab density was always lower in the mangroves than in the mudflats. There was a negative relationship between the stem density of Kandelia obovata (S., L.) and infaunal density. The pneumatophore density of Avicennia marina (Forsk.) correlated negatively with epifaunal density. Our results show that the response of macrobenthic abundance and community composition to mangrove vegetation was inconsistent. We reason that mangroves are critical habitats for the macrobenthos in the mudflats. However, if mangrove tree density is high, we predict that the macrobenthic density will decrease. This suggests that at some intermediate level of mangrove tree density, where there are enough mangrove trees to harbor a macrobenthic community but not enough trees to significantly reduce this density, mangroves management can be optimally achieved to promote the presence of a diverse and dense macrobenthic community.
Collapse
|
11
|
Bravo H, Cheng CLY, Iannucci A, Natali C, Quadros A, Rhodes M, Yip MML, Cannicci S, Fratini S. A DNA barcode library for mangrove gastropods and crabs of Hong Kong and the Greater Bay Area reveals an unexpected faunal diversity associated with the intertidal forests of Southern China. BMC Ecol Evol 2021; 21:180. [PMID: 34556035 PMCID: PMC8459539 DOI: 10.1186/s12862-021-01914-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 09/15/2021] [Indexed: 11/30/2022] Open
Abstract
Background Mangroves are tropical and subtropical intertidal forests colonising sheltered coasts across the world. They host a unique faunal community, dominated by brachyuran crabs and gastropods. These invertebrates strongly contribute to the functionality of the entire forest. The reliable assessment of mangrove faunal diversity is, thus, a crucial step for efficient management and conservation plans, but it is hindered by difficulties in species identification. Here we provide a verified DNA barcode library for brachyuran crabs and gastropods inhabiting the mangroves of the Greater Bay Area, Southern China. In particular, we collected and morphologically identified 1100 specimens of mangrove associated brachyuran crabs and gastropods. The partial sequences of the mtDNA cytochrome oxidase subunit I gene were obtained from 275 specimens. Barcode sequences were then used to delineate Molecular Operational Taxonomic Units (MOTUs), employing three different delimitation methods: the automatic barcode gap discovery (ABGD) method, the general mixed Yule coalescent (GMYC) model and a Bayesian implementation of the Poisson tree processes (bPTP) model. Results By integrating DNA barcodes with morphology, we identified 44 gastropod species and 58 brachyuran species associated with Hong Kong mangroves, with five and seven new records, for gastropods and crabs, respectively, for the Greater Bay Area. The delineation of MOTUs based on barcode sequences revealed a strong congruence between morphological and molecular identification for both taxa, showing the high reliability of the barcode library. Conclusions This study provides the first reference barcode library for mangrove-associated macrobenthic fauna in the Greater Bay Area and represents a reliable tool to management and conservation plans. Our molecular analyses resolved long lasting taxonomic misidentifications and inconsistencies and updated the knowledge on the geographical distribution of Asian mangrove associated fauna, ultimately highlighting a level of biodiversity higher than previously thought for Southern China. Supplementary Information The online version contains supplementary material available at 10.1186/s12862-021-01914-6.
Collapse
Affiliation(s)
- Henrique Bravo
- The Swire Institute of Marine Science and Division for Ecology and Biodiversity, School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, Hong Kong S.A.R., People's Republic of China.,Groningen Institute for Evolutionary Life Sciences, University of Groningen, 9700 CC, Groningen, The Netherlands
| | - Christine L Y Cheng
- The Swire Institute of Marine Science and Division for Ecology and Biodiversity, School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, Hong Kong S.A.R., People's Republic of China
| | - Alessio Iannucci
- Department of Biology, University of Florence, 50019, Sesto Fiorentino, Italy
| | - Chiara Natali
- Department of Biology, University of Florence, 50019, Sesto Fiorentino, Italy
| | - Aline Quadros
- The Swire Institute of Marine Science and Division for Ecology and Biodiversity, School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, Hong Kong S.A.R., People's Republic of China
| | - Martin Rhodes
- The Swire Institute of Marine Science and Division for Ecology and Biodiversity, School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, Hong Kong S.A.R., People's Republic of China
| | - Matthew M L Yip
- The Swire Institute of Marine Science and Division for Ecology and Biodiversity, School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, Hong Kong S.A.R., People's Republic of China
| | - Stefano Cannicci
- The Swire Institute of Marine Science and Division for Ecology and Biodiversity, School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, Hong Kong S.A.R., People's Republic of China. .,Department of Biology, University of Florence, 50019, Sesto Fiorentino, Italy.
| | - Sara Fratini
- Department of Biology, University of Florence, 50019, Sesto Fiorentino, Italy
| |
Collapse
|
12
|
A functional analysis reveals extremely low redundancy in global mangrove invertebrate fauna. Proc Natl Acad Sci U S A 2021; 118:2016913118. [PMID: 34312251 PMCID: PMC8364210 DOI: 10.1073/pnas.2016913118] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Global mangrove deforestation and degradation drive the loss of the associated invertebrate fauna vital to ecosystem services. The functional diversity and resilience of this fauna has not been assessed. We show that even small mangrove patches host functionally diverse faunal assemblages and can act as biodiversity reservoirs. However, globally, functional redundancy of mangrove invertebrates (i.e., the average number of species performing a similar functional role in an assemblage) is extremely low, except in Southeast Asia. Thus, even a modest local loss of invertebrate diversity will have significant negative consequences for mangrove functionality and resilience. Current approaches to assess threats to mangroves heavily rely on loss in areal extent, but our results suggest that loss of function may be more vulnerable. Deforestation results in habitat fragmentation, decreasing diversity, and functional degradation. For mangroves, no data are available on the impact of deforestation on the diversity and functionality of the specialized invertebrate fauna, critical for their functioning. We compiled a global dataset of mangrove invertebrate fauna comprising 364 species from 16 locations, classified into 64 functional entities (FEs). For each location, we calculated taxonomic distinctness (Δ+), functional richness (FRi), functional redundancy (FRe), and functional vulnerability (FVu) to assess functional integrity. Δ+ and FRi were significantly related to air temperature but not to geomorphic characteristics, mirroring the global biodiversity anomaly of mangrove trees. Neither of those two indices was linked to forest area, but both sharply decreased in human-impacted mangroves. About 60% of the locations showed an average FRe < 2, indicating that most of the FEs comprised one species only. Notable exceptions were the Eastern Indian Ocean and west Pacific Ocean locations, but also in this region, 57% of the FEs had no redundancy, placing mangroves among the most vulnerable ecosystems on the planet. Our study shows that despite low redundancy, even small mangrove patches host truly multifunctional faunal assemblages, ultimately underpinning their services. However, our analyses also suggest that even a modest local loss of invertebrate diversity could have significant negative consequences for many mangroves and cascading effects for adjacent ecosystems. This pattern of faunal-mediated ecosystem functionality is crucial for assessing the vulnerability of mangrove forests to anthropogenic impact and provides an approach to planning their effective conservation and restoration.
Collapse
|