Land use is a better predictor of tropical seagrass condition than marine protection
| Autor: | Miguel D. Fortes, T.E. Angela L. Quiros, Peter T. Raimondi, Bernie R. Tershy, Donald A. Croll |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Abiotic component geography geography.geographical_feature_category Land use biology Ecology 010604 marine biology & hydrobiology Marine reserve biology.organism_classification 010603 evolutionary biology 01 natural sciences Fishery Seagrass Agricultural land Archipelago Environmental science Marine protected area Species richness Ecology Evolution Behavior and Systematics Nature and Landscape Conservation |
| Zdroj: | Biological Conservation. 209:454-463 |
| ISSN: | 0006-3207 |
| DOI: | 10.1016/j.biocon.2017.03.011 |
| Popis: | Effective coastal conservation requires a better understanding of how human activities on land may directly and indirectly affect adjacent marine communities. However, the relationship between terrestrial and marine systems has rarely been considered in terrestrial and marine reserve design. Seagrasses are affected by land-based activities due to their proximity to terrestrial systems and sensitivity to fluxes of terrestrially-derived organic and inorganic material. Our study examines how land use patterns adjacent to seagrass meadows influence the ecological integrity of seagrass using a suite of seagrass condition metrics on a landscape level across the Philippine archipelago. Using canonical correlation analysis, we measured the association between environmental variables (land use and seagrass abiotic conditions) with biotic variables (seagrass species richness and abundance). Terrestrial protection adjacent to seagrass meadows, defined as the absence of various anthropogenic land use perturbations, had significant positive effects on seagrass condition. The watershed area, and area of farmland and human development, had the most negative effect on seagrass condition. Using analysis of covariance and regression, we examined how marine protected area (MPA) establishment, size, and age, affected seagrass biotic conditions while holding environmental conditions constant. The relationship between biological and environmental canonical factors did not vary as a function of an MPA. This study provides evidence that land use is more important than marine protection for tropical seagrass condition. Our results demonstrate the complementary connection between land and sea, justifying the ‘ridge-to-reef’ approach in coastal conservation. Proper management of seagrasses should account for stewardship of the adjacent watersheds. |
| Databáze: | OpenAIRE |
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