Multi-decadal decline in cover of giant kelp Macrocystis pyrifera at the southern limit of its Australian range
| العنوان: | Multi-decadal decline in cover of giant kelp Macrocystis pyrifera at the southern limit of its Australian range |
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| المؤلفون: | Craig R. Johnson, Claire Butler, Vanessa Lucieer, Simon Wotherspoon |
| المصدر: | Marine Ecology Progress Series. 653:1-18 |
| بيانات النشر: | Inter-Research Science Center, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 0106 biological sciences, Canopy, 010504 meteorology & atmospheric sciences, Ecology, biology, Range (biology), 010604 marine biology & hydrobiology, Kelp, Climate change, Oceanic climate, Aquatic Science, biology.organism_classification, 01 natural sciences, Sea surface temperature, Oceanography, Habitat, Environmental science, Macrocystis pyrifera, Ecology, Evolution, Behavior and Systematics, 0105 earth and related environmental sciences |
| الوصف: | Knowledge of long-term and multi-scale trends in ecological systems is a vital component in understanding their dynamics. We used Landsat satellite imagery to develop the first long-term (1986-2015) data set describing the cover of dense surface canopies of giant kelp Macrocystis pyrifera around the entire coastline of Tasmania, Australia, and assessed the extent to which potential environmental drivers explain the dynamics of surface canopies at multiple spatial and temporal scales. Broad-scale temporal patterns in canopy cover are correlated with El Niño-Southern Oscillation events, while regional patterns are related to sea surface temperature and nutrient regimes are associated with the East Australian Current. Regression models developed to predict the presence or absence of giant kelp canopy emphasise the importance of sea surface temperature in these systems. Long-term decline in canopy cover is clearly evident in most regions, and in light of increasing thermal stress associated with a changing ocean climate, this raises concern for the future of this species as a major habitat-forming kelp in Australia and some other regions worldwide. Given that Tasmania represents the stronghold of the range of this species in Australia, but is a geographic trap in that there is no suitable habitat for M. pyrifera to the south, our findings support the Federal listing of giant kelp communities in Australia as an endangered marine community type. |
| تدمد: | 1616-1599 0171-8630 |
| DOI: | 10.3354/meps13510 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::eed8f926325a0e31af476aaaf370a73e https://doi.org/10.3354/meps13510 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi...........eed8f926325a0e31af476aaaf370a73e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 16161599 01718630 |
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| DOI: | 10.3354/meps13510 |