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Wan X, Fang Y, Jiang Y, Lu X, Zhu L, Feng J. Temperature and nutrients alter the relative importance of stochastic and deterministic processes in the coastal macroinvertebrates biodiversity assembly on long-time scales. Ecol Evol 2024; 14:e11062. [PMID: 38389996 PMCID: PMC10883258 DOI: 10.1002/ece3.11062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/01/2024] [Accepted: 02/07/2024] [Indexed: 02/24/2024] Open
Abstract
Macroinvertebrates play a vital role in coastal ecosystems and are an important indicator of ecosystem quality. Both anthropogenic activity and environmental changes may lead to significant changes in the marine macroinvertebrate community. However, the assembly process of benthic biodiversity and its mechanism driven by environmental factors at large scales remains unclear. Here, using the benthic field survey data of 15 years at large spatial and temporal scales from the Yellow Sea Large Marine Ecosystem, we investigated the relative importance of environmental selection, dispersal processes, random-deterministic processes of macroinvertebrates community diversity assembly, and the responses of this relative importance driven by temperature and nutrients. Results showed that the macroinvertebrates community diversity is mainly affected by dispersal. Nitrogen and phosphorus are the most important negative factors among environmental variables, while geographical distance is the main limiting factor of β diversity. Within the range of 0.35-0.70 mg/L of nutrients, increasing nutrient concentration can significantly facilitate the contribution of the decay effect to β diversity. Within the temperature range studied (15.0-18.0°C), both warming and cooling can lead to a greater tendency for species diversity assembly processes to be dominated by deterministic processes. The analysis contributes to a better understanding of the assembly process of the diversity of coastal marine macroinvertebrates communities and how they adapt to global biogeochemical processes.
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Affiliation(s)
- Xuhao Wan
- College of Environmental Science and Engineering Nankai University Tianjin China
| | - Yuan Fang
- College of Environmental Science and Engineering Nankai University Tianjin China
| | - Yueming Jiang
- College of Environmental Science and Engineering Nankai University Tianjin China
| | - Xueqiang Lu
- College of Environmental Science and Engineering Nankai University Tianjin China
| | - Lin Zhu
- College of Environmental Science and Engineering Nankai University Tianjin China
| | - Jianfeng Feng
- College of Environmental Science and Engineering Nankai University Tianjin China
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Zi F, Wang B, Yang L, Huo Q, Wang Z, Ren D, Huo B, Song Y, Chen S. Ecology of Saline Watersheds: An Investigation of the Functional Communities and Drivers of Benthic Fauna in Typical Water Bodies of the Irtysh River Basin. BIOLOGY 2024; 13:27. [PMID: 38248458 PMCID: PMC10813219 DOI: 10.3390/biology13010027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/20/2023] [Accepted: 12/31/2023] [Indexed: 01/23/2024]
Abstract
In this study, we investigated how changes in salinity affect biodiversity and function in 11 typical water bodies in the Altai region. The salinity of the freshwater bodies ranged from 0 to 5, the brackish water salinities ranged from 5 to 20, and the hypersaline environments had salinities > 20. We identified 11 orders, 34 families, and 55 genera in 3061 benthic samples and classified them into 10 traits and 32 categories. Subsequently, we conducted Mantel tests and canonical correlation analysis (CCA) and calculated biodiversity and functional diversity indices for each sampling site. The results indicated that biodiversity and the proportion of functional traits were greater in freshwater environments than in saline environments and decreased gradually with increasing salinity. Noticeable shifts in species distribution were observed in high-salinity environments and were accompanied by specific functional traits such as swimming ability, smaller body sizes, and air-breathing adaptations. The diversity indices revealed that the species were more evenly distributed in high-diversity environments under the influence of salinity. In contrast, in high-salinity environments, only a few species dominated. The results suggested that increasing salinity accelerated the evolution of benthic communities, leading to reduced species diversity and functional homogenization. We recommend enhancing the monitoring of saline water resources and implementing sustainable water resource management to mitigate the impact of salinity stress on aquatic communities in response to climate-induced soil and water salinization.
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Affiliation(s)
- Fangze Zi
- Tarim Research Center of Rare Fishes, College of Life Sciences and Technology, Tarim University, Alar 843300, China; (F.Z.); (L.Y.); (Q.H.); (Z.W.); (D.R.)
| | - Baoqiang Wang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China;
| | - Liting Yang
- Tarim Research Center of Rare Fishes, College of Life Sciences and Technology, Tarim University, Alar 843300, China; (F.Z.); (L.Y.); (Q.H.); (Z.W.); (D.R.)
| | - Qiang Huo
- Tarim Research Center of Rare Fishes, College of Life Sciences and Technology, Tarim University, Alar 843300, China; (F.Z.); (L.Y.); (Q.H.); (Z.W.); (D.R.)
| | - Zhichao Wang
- Tarim Research Center of Rare Fishes, College of Life Sciences and Technology, Tarim University, Alar 843300, China; (F.Z.); (L.Y.); (Q.H.); (Z.W.); (D.R.)
| | - Daoquan Ren
- Tarim Research Center of Rare Fishes, College of Life Sciences and Technology, Tarim University, Alar 843300, China; (F.Z.); (L.Y.); (Q.H.); (Z.W.); (D.R.)
| | - Bin Huo
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China;
| | - Yong Song
- Tarim Research Center of Rare Fishes, College of Life Sciences and Technology, Tarim University, Alar 843300, China; (F.Z.); (L.Y.); (Q.H.); (Z.W.); (D.R.)
| | - Shengao Chen
- Tarim Research Center of Rare Fishes, College of Life Sciences and Technology, Tarim University, Alar 843300, China; (F.Z.); (L.Y.); (Q.H.); (Z.W.); (D.R.)
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Abdullah Al M, Akhtar A, Barua H, Kamal AHM, Islam MS, AftabUddin S, Idris MH, Abualreesh MH, Modeo L. Intertidal macroinvertebrate community structure in a subtropical channel is driven by sediment properties across different land-use types. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:66389-66404. [PMID: 35501444 DOI: 10.1007/s11356-022-20471-z] [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: 11/03/2021] [Accepted: 04/23/2022] [Indexed: 06/14/2023]
Abstract
Macroinvertebrate community in the intertidal setup plays an important role in coastal ecosystem functions and biogeochemical cycle. However, different land use pattern may influence on their community structure, diversity, and composition in the coastal ecosystems. Using Van-Veen grab sampler, 60 sediment samples were seasonally collected from mangroves-dominated, aquaculture-dominated, and anthropogenically affected area in the lower intertidal zone of the Kohelia channel of Bangladesh, the Northern Bay of Bengal. We have tasted the variation in sediment properties across three land-use types in this intertidal habitat. To understand the patterns of benthic macroinvertebrate distribution, a neutral community model was applied. Our results showed that community composition and biodiversity of the benthic macroinvertebrate communities varied significantly between mangrove-dominated area with anthropogenically affected areas among the four seasons. The neutral community model revealed that community assembly of benthic macroinvertebrates in the lower intertidal habitats is structured by stochastic processes while sediment properties have significant influence on species distribution and interactions. Results suggested that land-use changes altered sediment properties and could change the diversity and distribution of the macroinvertebrate communities in the lower intertidal habitats.
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Affiliation(s)
- Mamun Abdullah Al
- Aquatic Eco-Health Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, Xiamen, 361021, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Aysha Akhtar
- Institute of Marine Sciences, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Hillol Barua
- Institute of Marine Sciences, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Abu Hena Mustafa Kamal
- Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu, Kuala Nerus, 21030, Terengganu, Malaysia
| | - Md Shafiqul Islam
- Institute of Marine Sciences, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Sheikh AftabUddin
- Institute of Marine Sciences, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Mohd Hanafi Idris
- Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu, Kuala Nerus, 21030, Terengganu, Malaysia
| | - Muyassar H Abualreesh
- Department of Marine Biology, Faculty of Marine Sciences, King Abdul Aziz University, Jeddah, 21589, Saudi Arabia
| | - Letizia Modeo
- Department of Biology, University of Pisa, Via A. Volta 4/6, 56026, Pisa, Italy
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Barnes RSK. What does measuring species diversity in estuarine seagrass systems actually assess? MARINE ENVIRONMENTAL RESEARCH 2021; 172:105500. [PMID: 34653926 DOI: 10.1016/j.marenvres.2021.105500] [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: 07/30/2021] [Revised: 10/01/2021] [Accepted: 10/07/2021] [Indexed: 06/13/2023]
Abstract
Relationships between species diversity and other species-density and species-richness metrics were investigated in the seagrass macrobenthos of Knysna estuarine bay, South Africa. Although a wide range of species density occurred across sites, neither Hill-Shannon nor Hill-Simpson diversity showed any significant relationship with it, although they did with species richness. Instead species diversity was very closely related to relative evenness, and (negatively) to overall assemblage abundance. No significant relationship was found between species density and evenness. Whilst there was a clear and marked decrease in species density upstream along the main estuarine channel, only one of the species-diversity indices (the Hill-Shannon) showed a significant equivalent decrease. Relationships depended on how 'species richness' was assessed, and were very strongly influenced by the superabundant local occurrence of a few individual faunal components (three gastropod and one tanaid species). Species-diversity analysis contributes nothing new in such estuarine seagrass meadows and seems best avoided.
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Affiliation(s)
- R S K Barnes
- Department of Zoology and Entomology, Rhodes University, Makhanda, Eastern Cape, 6140, South Africa; Department of Zoology & Conservation Research Institute, University of Cambridge, Cambridge, UK.
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Krug PJ, Shimer E, Rodriguez VA. Differential Tolerance and Seasonal Adaptation to Temperature and Salinity Stress at a Dynamic Range Boundary Between Estuarine Gastropods. THE BIOLOGICAL BULLETIN 2021; 241:105-122. [PMID: 34436970 DOI: 10.1086/715845] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
AbstractInsight into how coastal organisms will respond to changing temperature and salinity regimes may be derived from studies of adaptation to fluctuating estuarine environments, especially under stressful range-edge conditions. We characterized a dynamic range boundary between two estuarine sea slugs, Alderia modesta (distributed across the North Pacific and North Atlantic) and Alderia willowi, known from southern and central California. The species overlap from Bodega Bay to San Francisco Bay, where populations are dominated by A. modesta after winter rains but by A. willowi after peak summer temperatures. Laboratory assays confirmed superior tolerance to low salinity for the northern species, A. modesta: encapsulated embryos developed at 8 ppt, larvae survived at 4-6 ppt, and adults survived repeated exposure to 2 ppt, salinities that reduced development or survival for the same stages of A. willowi. Adults did not appreciably differ in their high-temperature threshold, however. Each species showed increased tolerance to either temperature or salinity stress at its range margin, indicating plasticity or local adaptation, but at the cost of reduced tolerance to the other stressor. At its northern limit, A. willowi became more tolerant of low salinity during the winter rainy season, but also less heat tolerant. Conversely, A. modesta became more heat resistant from spring to summer at its southern limit, but less tolerant of low salinity. Trade-offs in stress tolerance may generally constrain adaptation and limit biotic response to a rapidly changing environment, as well as differentiating species niches.
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Hsu MH, Lin JW, Liao CP, Hsu JY, Huang WS. Trans-marine dispersal inferred from the saltwater tolerance of lizards from Taiwan. PLoS One 2021; 16:e0247009. [PMID: 33577597 PMCID: PMC7880474 DOI: 10.1371/journal.pone.0247009] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 02/01/2021] [Indexed: 11/19/2022] Open
Abstract
Dehydration and hypersalinity challenge non-marine organisms crossing the ocean. The rate of water loss and saltwater tolerance thus determine the ability to disperse over sea and further influence species distribution. Surprisingly, this association between physiology and ecology is rarely investigated in terrestrial vertebrates. Here we conducted immersion experiments to individuals and eggs of six lizard species differently distributed across Taiwan and the adjacent islands to understand if the physiological responses reflect the geographical distribution. We found that Plestiodon elegans had the highest rate of water loss and the lowest saltwater tolerance, whereas Eutropis longicaudata and E. multifasciata showed the lowest rate of water loss and the highest saltwater tolerance. Diploderma swinhonis, Hemidactylus frenatus, and Anolis sagrei had medium measurements. For the eggs, only the rigid-shelled eggs of H. frenatus were incubated successfully after treatments. While, the parchment-shelled eggs of E. longicaudata and D. swinhonis lost or gained water dramatically in the immersions without any successful incubation. Combined with the historical geology of the islands and the origin areas of each species, the inferences of the results largely explain the current distribution of these lizards across Taiwan and the adjacent islands, pioneerly showing the association between physiological capability and species distribution.
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Affiliation(s)
- Min-Hao Hsu
- Department of Biology, National Museum of Natural Science, Taichung, Taiwan
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Jhan-Wei Lin
- Department of Biology, National Museum of Natural Science, Taichung, Taiwan
| | - Chen-Pan Liao
- Department of Biology, National Museum of Natural Science, Taichung, Taiwan
- Department of Life Science, Tunghai University, Taichung, Taiwan
| | - Jung-Ya Hsu
- Department of Biology, National Museum of Natural Science, Taichung, Taiwan
| | - Wen-San Huang
- Department of Biology, National Museum of Natural Science, Taichung, Taiwan
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
- Department of Life Science, Tunghai University, Taichung, Taiwan
- * E-mail:
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7
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Vieira DC, Gallucci F, Corte GN, Checon HH, Zacagnini Amaral AC, Fonseca G. The relative contribution of non-selection and selection processes in marine benthic assemblages. MARINE ENVIRONMENTAL RESEARCH 2021; 163:105223. [PMID: 33302155 DOI: 10.1016/j.marenvres.2020.105223] [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: 06/24/2020] [Revised: 11/15/2020] [Accepted: 11/28/2020] [Indexed: 06/12/2023]
Abstract
We tested the hypothesis that the ubiquity of marine meiofaunal nematodes and their indiscriminate passive dispersal create assemblages that are less limited by its environment; whereas the relatively smaller population sizes of macrofauna, associated with their ability to track environmental conditions before settlement, renders their distribution more environmentally-restricted. We compared the empirical distribution of macrofauna and nematode species with that of communities simulated under different assumptions of selection (e.g. environmental filtering) and non-selection (e.g. dispersal limitation) processes. Selection processes were the prime driver of both meio- and macrofauna assemblages, with rare species strongly contributing to this component. The total number of species explained by non-selection processes was 27% higher in nematodes than in macrofauna. Our results underline the importance of a species-level approach to determine the contribution of selection and non-selection assembly processes. Moreover, they highlight the important yet overlooked role of dispersal and stochastic processes in determining species dynamics.
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Affiliation(s)
- Danilo Cândido Vieira
- Centro de Estudos Do Mar - Universidade Federal Do Paraná - Caixa Postal 50.002, 83255-000, Pontal Do Paraná, PR, Brazil; Universidade Federal de São Paulo, Av. Dona Ana Costa, 95 - CEP, 11060-001, Santos, SP, Brazil.
| | - Fabiane Gallucci
- Universidade Federal de São Paulo, Av. Dona Ana Costa, 95 - CEP, 11060-001, Santos, SP, Brazil
| | - Guilherme Nascimento Corte
- Instituto Oceanográfico, Universidade de São Paulo, Praça Do Oceanográfico, 191, São Paulo, SP - CEP, 05508-120, Brazil; Instituto de Biologia, Universidade Estadual de Campinas - Cidade Universitária "Zeferino Vaz", CEP, 13083-970, Campinas, SP, Brazil; Escola Do Mar, Ciência e Tecnologia, Universidade Do Vale Do Itajaí - Rua Uruguai, 458 - CEP 88, 302-202, Itajaí, SC, Brazil
| | - Helio Herminio Checon
- Instituto Oceanográfico, Universidade de São Paulo, Praça Do Oceanográfico, 191, São Paulo, SP - CEP, 05508-120, Brazil; Instituto de Biologia, Universidade Estadual de Campinas - Cidade Universitária "Zeferino Vaz", CEP, 13083-970, Campinas, SP, Brazil
| | - Antônia Cecília Zacagnini Amaral
- Instituto de Biologia, Universidade Estadual de Campinas - Cidade Universitária "Zeferino Vaz", CEP, 13083-970, Campinas, SP, Brazil
| | - Gustavo Fonseca
- Universidade Federal de São Paulo, Av. Dona Ana Costa, 95 - CEP, 11060-001, Santos, SP, Brazil
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Rao Y, Cai L, Chen B, Chen X, Zheng L, Lin S. How do spatial and environmental factors shape the structure of a coastal macrobenthic community and meroplanktonic larvae cohort? Evidence from Daya Bay. MARINE POLLUTION BULLETIN 2020; 157:111242. [PMID: 32469742 DOI: 10.1016/j.marpolbul.2020.111242] [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: 12/24/2019] [Revised: 05/01/2020] [Accepted: 05/01/2020] [Indexed: 06/11/2023]
Abstract
We examined the relative importance of spatial processes (dispersal-related) and environmental processes (environmental selection-related) in community structure for macrobenthos (including juveniles and adults) and meroplanktonic larvae in the subtidal areas of Daya Bay, China. We found that both macrobenthos and meroplanktonic larvae showed similar spatial patterns, both following the distance-decay relationship. The results of variation partitioning analysis (VPA) showed the roles of both spatial and environmental factors in governing the assembly of both communities, although both explained only a small (slightly larger for spatial factor) fraction of the community variation. We also found that macrobenthos were more affected by spatial processes than meroplanktonic larvae. In addition, we highlight that the mechanisms determining community structure change according to the spatial extent considered.
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Affiliation(s)
- Yiyong Rao
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Lizhe Cai
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, China; Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, China.
| | - Bingwen Chen
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Xinwei Chen
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Lianming Zheng
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
| | - Senjie Lin
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
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Li X, Yang W, Li S, Sun T, Bai J, Pei J, Xie T, Cui B. Asymmetric responses of spatial variation of different communities to a salinity gradient in coastal wetlands. MARINE ENVIRONMENTAL RESEARCH 2020; 158:105008. [PMID: 32501264 DOI: 10.1016/j.marenvres.2020.105008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/29/2020] [Accepted: 04/29/2020] [Indexed: 06/11/2023]
Abstract
Various ecological communities are susceptible to the salinity gradients in coastal wetlands. Remane diagram has well described the macrozoobenthos diversity pattern along salinity gradients. Yet, further research is still needed, that is, the changes in diversity and biomass of other communities (e.g. plants, fish) along salinity gradients, and whether these changes are consistent or different among different communities. In this study, using China's Yellow River Delta wetland as a case study, we analyzed the variation of the community composition, species richness, and biomass of plant, macrozoobenthos, and fish communities along a salinity gradient from <0.5 to 30 ppt. We found that plant community composition exhibited more distinct variation along the salinity gradient than macrozoobenthos, with the least distinction for fish. Plant species richness decreased greatly along the gradient, whereas macrozoobenthos richness first decreased and then increased with increasing salinity, with the low richness occurring at a salinity of 0.9-12.3 ppt. Fish had the highest richness at a salinity of 14.8-16.0 ppt. The sum of plant, macrozoobenthos, and fish species and macrozoobenthos richness were both similar to the Remane diagram. Plants had higher biomass in low-salinity zones than in high-salinity zones, except for high biomass at a salinity of 14.8-16.0 ppt, whereas macrozoobenthos and fish showed the opposite trend. Principal-coordinate analysis showed an obvious dissimilarity map based on the composition, richness, and biomass of the plant, macrozoobenthos, and fish communities. Overall, the effects of salinity gradient differed among different communities. These findings demonstrate the asymmetric responses of different communities to salinity gradients, and have practical implications for maintaining a salinity gradient in coastal wetlands.
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Affiliation(s)
- Xiaoxiao Li
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China
| | - Wei Yang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China; Yellow River Estuary Wetland Ecosystem Observation and Research Station, Ministry of Education, Shandong, 257500, China.
| | - Shanze Li
- State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, 100038, China
| | - Tao Sun
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China; Yellow River Estuary Wetland Ecosystem Observation and Research Station, Ministry of Education, Shandong, 257500, China
| | - Junhong Bai
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China; Yellow River Estuary Wetland Ecosystem Observation and Research Station, Ministry of Education, Shandong, 257500, China
| | - Jun Pei
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China
| | - Tian Xie
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China
| | - Baoshan Cui
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China; Yellow River Estuary Wetland Ecosystem Observation and Research Station, Ministry of Education, Shandong, 257500, China
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10
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Alves AT, Petsch DK, Barros F. Drivers of benthic metacommunity structure along tropical estuaries. Sci Rep 2020; 10:1739. [PMID: 32015384 PMCID: PMC6997391 DOI: 10.1038/s41598-020-58631-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 01/19/2020] [Indexed: 11/29/2022] Open
Abstract
Community structure of many systems changes across space in many different ways (e.g., gradual, random or clumpiness). Accessing patterns of species spatial variation in ecosystems characterized by strong environmental gradients, such as estuaries, is essential to provide information on how species respond to them and for identification of potential underlying mechanisms. We investigated how environmental filters (i.e., strong environmental gradients that can include or exclude species in local communities), spatial predictors (i.e., geographical distance between communities) and temporal variations (e.g., different sampling periods) influence benthic macroinfaunal metacommunity structure along salinity gradients in tropical estuaries. We expected environmental filters to explain the highest proportion of total variation due to strong salinity and sediment gradients, and the main structure indicating species displaying individualistic response that yield a continuum of gradually changing composition (i.e., Gleasonian structure). First we identified benthic community structures in three estuaries at Todos os Santos Bay in Bahia, Brazil. Then we used variation partitioning to quantify the influences of environmental, spatial and temporal predictors on the structures identified. More frequently, the benthic metacommunity fitted a quasi-nested pattern with total variation explained by the shared influence of environmental and spatial predictors, probably because of ecological gradients (i.e., salinity decreases from sea to river). Estuarine benthic assemblages were quasi-nested likely for two reasons: first, nested subsets are common in communities subjected to disturbances such as one of our estuarine systems; second, because most of the estuarine species were of marine origin, and consequently sites closer to the sea would be richer while those more distant from the sea would be poorer subsets.
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Affiliation(s)
- Andreia Teixeira Alves
- Laboratório de Ecologia Bentônica, Programa de Pós-Graduação em Ecologia: Teoria, Aplicação e Valores, Instituto de Biologia & CIENAM, Universidade Federal da Bahia, Rua Barão de Geremoabo s/n., Campus Ondina, CEP 40170-115, Salvador, BA, Brazil.
| | - Danielle Katharine Petsch
- Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (Nupelia), Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais (PEA), Universidade Estadual de Maringá, Av. Colombo 5790, CEP 87020-900, Maringá, PR, Brazil
| | - Francisco Barros
- Laboratório de Ecologia Bentônica, Programa de Pós-Graduação em Ecologia: Teoria, Aplicação e Valores, Instituto de Biologia & CIENAM, Universidade Federal da Bahia, Rua Barão de Geremoabo s/n., Campus Ondina, CEP 40170-115, Salvador, BA, Brazil
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11
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Menegotto A, Dambros CS, Netto SA. The scale-dependent effect of environmental filters on species turnover and nestedness in an estuarine benthic community. Ecology 2019; 100:e02721. [PMID: 30934116 DOI: 10.1002/ecy.2721] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 12/24/2018] [Accepted: 03/04/2019] [Indexed: 12/18/2022]
Abstract
Environmental filtering is a major mechanism structuring ecological communities. However, it is still not clear how different abiotic drivers composing the environmental filter interact with each other to determine local species assemblage and create spatial patterns in species distribution. Here, we evaluated the effects of two strong and uncorrelated environmental variables (salinity and sediment properties) on the β-diversity of an estuarine macrobenthic community while accounting for spatial effects. Our results show that the benthic community composition has a strong spatial structure along the estuary, which can be greatly explained by salinity and sediment variation. Salinity is most associated with species replacement (turnover), whereas sediment is more important for species loss (nestedness). However, the effects of sediment variation on nestedness are mainly detected at a smaller spatial scale (estuarine sectors), whereas the effects of salinity on species turnover are stronger as spatial scale increases (entire estuary). Our findings suggest that environmental filters can drive both turnover and nestedness components of β-diversity, but that their relative importance depends on the spatial scale of investigation. Although abiotic drivers associated with detrimental effects (sediment) usually result in nestedness, larger spatial scales encompass abiotic drivers associated with different suitable conditions (salinity), increasing the relative importance of the replacement component of species β-diversity.
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Affiliation(s)
- André Menegotto
- Laboratório de Ciências Marinhas, Universidade do Sul de Santa Catarina, Tubarão, Santa Catarina, 88704-900, Brazil
| | - Cristian S Dambros
- Departamento de Ecologia e Evolução, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Sérgio A Netto
- Laboratório de Ciências Marinhas, Universidade do Sul de Santa Catarina, Tubarão, Santa Catarina, 88704-900, Brazil.,Programa de Pós-Graduação em Ecologia e Evolução, Universidade Federal de Goiás, Goiânia, Goiás, 74690-900, Brazil
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Josefson AB, Loo L, Blomqvist M, Rolandsson J. Substantial changes in the depth distributions of benthic invertebrates in the eastern Kattegat since the 1880s. Ecol Evol 2018; 8:9426-9438. [PMID: 30377512 PMCID: PMC6194265 DOI: 10.1002/ece3.4395] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 05/09/2018] [Accepted: 06/17/2018] [Indexed: 11/11/2022] Open
Abstract
Bottom trawling and eutrophication are well known for their impacts on the marine benthic environment in the last decades. Evaluating the effects of these pressures is often restricted to contemporary benthic data, limiting the potential to observe change from an earlier (preimpact) state. In this study, we compared benthic species records from 1884 to 1886 by CGJ Petersen with recent data to investigate how benthic invertebrate species in the eastern Kattegat have changed since preimpact time. The study shows that species turnover between old and recent times was high, ca. 50%, and the species richness in the investigation area was either unchanged or higher in recent times, suggesting no net loss of species. Elements of metacommunity structure analysis of datasets from the 1880s, 1990s, and 2000s revealed a clear change in the depth distribution structure since the 1880s. The system changed from a Quasi-nested/Random pattern unrelated to depth in the 1880s with many species depth ranges over a major part of the studied depth interval, to a Clementsian pattern in recent times strongly positively correlated with depth. Around 30% of the 117 species recorded both in old and in recent times, including most trawling-sensitive species, that is large, semiemergent species, showed a decrease in maximal depth of occurrence from the deeper zone fished today to the shallower unfished zone, with on average 20 m. Concurrently, the species category remaining in the fished zone was dominated by species less sensitive to bottom trawling like infauna polychaetes and small-sized Peracarida crustaceans, most likely with short longevity. The depth interval and magnitude of the changes in depth distribution and the changes in species composition indicate impacts from bottom trawling rather than eutrophication. Furthermore, the high similarity of results from the recent datasets 10 years apart suggests chronic impact keeping the system in an altered state.
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Affiliation(s)
| | - Lars‐Ove Loo
- Department of Marine Sciences – TjärnöUniversity of GothenburgStrömstadSweden
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