Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14127 |
Predicting the cumulative effect of multiple disturbances on seagrass connectivity | |
Grech, Alana1,2; Hanert, Emmanuel3; McKenzie, Len4; Rasheed, Michael4,6; Thomas, Christopher5; Tol, Samantha4; Wang, Mingzhu2; Waycott, Michelle; Wolter, Jolan3; Coles, Rob4 | |
2018-07-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:7页码:3093-3104 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; Belgium |
英文摘要 | The rate of exchange, or connectivity, among populations effects their ability to recover after disturbance events. However, there is limited information on the extent to which populations are connected or how multiple disturbances affect connectivity, especially in coastal and marine ecosystems. We used network analysis and the outputs of a biophysical model to measure potential functional connectivity and predict the impact of multiple disturbances on seagrasses in the central Great Barrier Reef World Heritage Area (GBRWHA), Australia. The seagrass networks were densely connected, indicating that seagrasses are resilient to the random loss of meadows. Our analysis identified discrete meadows that are important sources of seagrass propagules and that serve as stepping stones connecting various different parts of the network. Several of these meadows were close to urban areas or ports and likely to be at risk from coastal development. Deep water meadows were highly connected to coastal meadows and may function as a refuge, but only for non-foundation species. We evaluated changes to the structure and functioning of the seagrass networks when one or more discrete meadows were removed due to multiple disturbance events. The scale of disturbance required to disconnect the seagrass networks into two or more components was on average >245km, about half the length of the metapopulation. The densely connected seagrass meadows of the central GBRWHA are not limited by the supply of propagules; therefore, management should focus on improving environmental conditions that support natural seagrass recruitment and recovery processes. Our study provides a new framework for assessing the impact of global change on the connectivity and persistence of coastal and marine ecosystems. Without this knowledge, management actions, including coastal restoration, may prove unnecessary and be unsuccessful. |
英文关键词 | connectivity cumulative effects graph theory Great Barrier Reef networks seagrass |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437281500029 |
WOS关键词 | POPULATION CONNECTIVITY ; LARVAL DISPERSAL ; GRAPH-THEORY ; LANDSCAPE CONNECTIVITY ; NORTH QUEENSLAND ; FISH POPULATIONS ; MARINE ; CONSERVATION ; RECOVERY ; NETWORK |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/16974 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.James Cook Univ, ARC Ctr Excellence Coral Reef Studies, Townsville, Qld, Australia; 2.Macquarie Univ, Dept Environm Sci, Sydney, NSW, Australia; 3.Catholic Univ Louvain, ELI, Louvain La Neuve, Belgium; 4.James Cook Univ, TropWATER Ctr Trop Water & Aquat Ecosyst Res, Cairns, Qld, Australia; 5.Catholic Univ Louvain, Inst Mech Mat & Civil Engn, Louvain La Neuve, Belgium; 6.Univ Adelaide, Australian Ctr Evolutionary Biol & Biodivers, Environm Inst, Sch Biol Sci, Adelaide, SA, Australia |
推荐引用方式 GB/T 7714 | Grech, Alana,Hanert, Emmanuel,McKenzie, Len,et al. Predicting the cumulative effect of multiple disturbances on seagrass connectivity[J]. GLOBAL CHANGE BIOLOGY,2018,24(7):3093-3104. |
APA | Grech, Alana.,Hanert, Emmanuel.,McKenzie, Len.,Rasheed, Michael.,Thomas, Christopher.,...&Coles, Rob.(2018).Predicting the cumulative effect of multiple disturbances on seagrass connectivity.GLOBAL CHANGE BIOLOGY,24(7),3093-3104. |
MLA | Grech, Alana,et al."Predicting the cumulative effect of multiple disturbances on seagrass connectivity".GLOBAL CHANGE BIOLOGY 24.7(2018):3093-3104. |
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