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Zeng J, Ai B, Jian Z, Zhao J, Sun S. Simulation of mangrove suitable habitat in the Guangdong-Hong Kong-Macao Area under the background of climate change. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:119678. [PMID: 38043307 DOI: 10.1016/j.jenvman.2023.119678] [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: 02/27/2023] [Revised: 09/24/2023] [Accepted: 11/20/2023] [Indexed: 12/05/2023]
Abstract
Climate change has resulted in great influence on the geographical distribution of species. Mangrove forests are one of the most precious ecosystems on the planet, yet they are being threatened by the habitat destruction and degradation under the situation of global warming. Seeking suitable areas for planting mangroves to tackle climate change has been gradually popular in ecological restoration. In this study, we applied the Maximum Entropy algorithm to assess the contribution of environmental factors on mangrove distribution, simulated mangrove suitable habitat for present and future (scenario of SSP245-2070s), and used kernel density analysis for identifying priority of mangrove reserve construction. Results indicate that mean diurnal range and elevation made the highest contribution on mangrove distribution. At present, the mangrove habitat suitability along the western coast of the Guangdong-Hong Kong-Macao Area (GHMA) was the highest while that along the eastern coast was the lowest. By 2070s, mangrove suitable areas would show a decreasing trend under SSP245 scenario. High suitable areas (HSAs) would change fastest and shift to northeast in the same direction as dominant environmental factors. For further mangrove restoration, it is advisable to select sites with high suitability density in the future but low reclamation density at present as prior mangrove reserves, and these sites distribute along the northeastern and northwestern coast of Zhanjiang, Yangjiang and Jiangmen, the Pearl River Estuary and Honghai Bay of Shanwei. Meanwhile, regions with lower suitability density but higher reclamation density could be listed as secondary mangrove reserves.
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Affiliation(s)
- Jiali Zeng
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519082, Guangdong, PR China
| | - Bin Ai
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519082, Guangdong, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, Guangdong, PR China; Pearl River Estuary Marine Ecosystem Research Station, Ministry of Education, Zhuhai, 519000, Guangdong, PR China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou, 510275, Guangdong, PR China.
| | - Zhuokai Jian
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519082, Guangdong, PR China
| | - Jun Zhao
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519082, Guangdong, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, Guangdong, PR China; Pearl River Estuary Marine Ecosystem Research Station, Ministry of Education, Zhuhai, 519000, Guangdong, PR China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou, 510275, Guangdong, PR China
| | - Shaojie Sun
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519082, Guangdong, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, Guangdong, PR China; Pearl River Estuary Marine Ecosystem Research Station, Ministry of Education, Zhuhai, 519000, Guangdong, PR China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou, 510275, Guangdong, PR China
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Peres LMC, Gouvêa LP, Hayden J, Burle G, Bastos E, Carneiro A, Horta PA. Effects of ocean warming and pollution on Sargassum forests. MARINE ENVIRONMENTAL RESEARCH 2023; 191:106167. [PMID: 37725865 DOI: 10.1016/j.marenvres.2023.106167] [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: 06/02/2023] [Revised: 08/10/2023] [Accepted: 09/01/2023] [Indexed: 09/21/2023]
Abstract
The combined effects of climate change and ocean pollution have resulted in a noteworthy decline of canopy-forming species, impacting marine biodiversity and ecosystem functioning significantly. In this context, Sargassum cymosum, which is widely distributed along the southwestern Atlantic Ocean, serves as an excellent model among canopy-forming species to investigate these impacts on populations in different regions and environmental conditions. Here, we evaluate the ecophysiological responses of two populations of S. cymosum, from Florianopolis (warm-temperate province; WTP) and Fernando de Noronha (tropical province, TP), through of interaction of temperatures and nutrient concentrations, representing marine heatwaves and acute pollution levels. Our findings revealed a decrease in biomass in both populations, highlighting the significance of nutrient enrichment as an anthropogenic filter that might potentially inhibit the expansion of the populations from tropical regions and temperature for WTP ones. These stressors directly impacted the physiological performance of S. cymosum populations, including relative growth rates, photosynthesis, chlorophylls, carotenoids and phenolic compound levels. Although there was an increase in both parameters for the TP population, a significant loss of biomass was observed, with growth rates reaching -1.5% per day. Our results highlight the need for urgent actions to manage the eutrophication process due to its negative association with global warming, which can enhance the impacts and preclude the settlement and survival of Sargassum in warm-temperate areas considering the observed and predicted tropicalization process.
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Affiliation(s)
- Letícia M Costa Peres
- Phycology Laboratory, Department of Botany, Biological Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil.
| | - Lidiane P Gouvêa
- CCMAR - Centre of Marine Sciences, University of Algarve, Faro, Portugal.
| | - Juliana Hayden
- Phycology Laboratory, Department of Botany, Biological Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Giulia Burle
- Phycology Laboratory, Department of Botany, Biological Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Eduardo Bastos
- Phycology Laboratory, Department of Botany, Biological Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Alessandra Carneiro
- NEMAR - Nucleo de Estudos do Mar, Biological Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Paulo A Horta
- Phycology Laboratory, Department of Botany, Biological Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
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Tavares AI, Assis J, Larkin PD, Creed JC, Magalhães K, Horta P, Engelen A, Cardoso N, Barbosa C, Pontes S, Regalla A, Almada C, Ferreira R, Abdoul BM, Ebaye S, Bourweiss M, Dos Santos CVD, Patrício AR, Teodósio A, Santos R, Pearson GA, Serrao EA. Long range gene flow beyond predictions from oceanographic transport in a tropical marine foundation species. Sci Rep 2023; 13:9112. [PMID: 37277448 DOI: 10.1038/s41598-023-36367-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 06/02/2023] [Indexed: 06/07/2023] Open
Abstract
The transport of passively dispersed organisms across tropical margins remains poorly understood. Hypotheses of oceanographic transportation potential lack testing with large scale empirical data. To address this gap, we used the seagrass species, Halodule wrightii, which is unique in spanning the entire tropical Atlantic. We tested the hypothesis that genetic differentiation estimated across its large-scale biogeographic range can be predicted by simulated oceanographic transport. The alternative hypothesis posits that dispersal is independent of ocean currents, such as transport by grazers. We compared empirical genetic estimates and modelled predictions of dispersal along the distribution of H. wrightii. We genotyped eight microsatellite loci on 19 populations distributed across Atlantic Africa, Gulf of Mexico, Caribbean, Brazil and developed a biophysical model with high-resolution ocean currents. Genetic data revealed low gene flow and highest differentiation between (1) the Gulf of Mexico and two other regions: (2) Caribbean-Brazil and (3) Atlantic Africa. These two were more genetically similar despite separation by an ocean. The biophysical model indicated low or no probability of passive dispersal among populations and did not match the empirical genetic data. The results support the alternative hypothesis of a role for active dispersal vectors like grazers.
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Affiliation(s)
- Ana I Tavares
- Center of Marine Sciences (CCMAR-CIMAR), Universidade do Algarve, Faro, Portugal.
| | - Jorge Assis
- Center of Marine Sciences (CCMAR-CIMAR), Universidade do Algarve, Faro, Portugal
- Faculty of Bioscience and Aquaculture, Nord Universitet, Postboks 1490, 8049, Bodø, Norway
| | | | - Joel C Creed
- Departamento de Ecologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Karine Magalhães
- Área de Ecologia, Departamento de Biologia, Universidade Federal Rural de Pernambuco, R. Dom Manoel de Medeiros, s/n-Dois Irmãos, Recife, PE, CEP 52171-900, Brazil
| | - Paulo Horta
- Laboratório de Ficologia, Departamento de Botânica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-970, Brazil
| | - Aschwin Engelen
- Center of Marine Sciences (CCMAR-CIMAR), Universidade do Algarve, Faro, Portugal
- CARMABI Foundation, Piscaderabaai z/n, P.O. Box 2090, Willemstad, Curaçao, The Netherlands
| | - Noelo Cardoso
- CIPA, Centro de Investigação Pesqueira Aplicada, Bissau, Guinea-Bissau
| | - Castro Barbosa
- IBAP-Instituto da Biodiversidade e Áreas Protegidas, Bissau, Guinea-Bissau
| | - Samuel Pontes
- IBAP-Instituto da Biodiversidade e Áreas Protegidas, Bissau, Guinea-Bissau
| | - Aissa Regalla
- IBAP-Instituto da Biodiversidade e Áreas Protegidas, Bissau, Guinea-Bissau
| | - Carmen Almada
- Faculdade de Ciências e Tecnologia, Universidade de Cabo Verde, Praia, Cabo Verde
| | - Rogério Ferreira
- Center of Marine Sciences (CCMAR-CIMAR), Universidade do Algarve, Faro, Portugal
- Dragões do Mar, Nova Estrela, Ilha do Príncipe, São Tomé and Príncipe
| | | | - Sidina Ebaye
- Parc Nationale du Banc d'Arguin (PNBA), Chami, Mauritania
| | - Mohammed Bourweiss
- Institut Mauritanien de Recherche Oceanographique et des Peches (IMROP), Nouadhibou, Mauritania
| | | | - Ana R Patrício
- MARE-Marine and Environmental Sciences Centre, ISPA-Instituto Universitário, Lisbon, Portugal
- Centre for Ecology and Conservation, University of Exete, Penryn, UK
| | - Alexandra Teodósio
- Center of Marine Sciences (CCMAR-CIMAR), Universidade do Algarve, Faro, Portugal
| | - Rui Santos
- Center of Marine Sciences (CCMAR-CIMAR), Universidade do Algarve, Faro, Portugal
| | - Gareth A Pearson
- Center of Marine Sciences (CCMAR-CIMAR), Universidade do Algarve, Faro, Portugal
| | - Ester A Serrao
- Center of Marine Sciences (CCMAR-CIMAR), Universidade do Algarve, Faro, Portugal
- CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Vairão, Portugal
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