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Biodiversity hotspots are not congruent with conservation areas in the Gulf of California
Morzaria-Luna, H.N.; Cruz-Piñon, G.; Brusca, R.C.; López-Ortiz, A.M.; Moreno-Báez, M.; Reyes-Bonilla, H.; Turk-Boyer, P. (2018). Biodiversity hotspots are not congruent with conservation areas in the Gulf of California. Biodivers. Conserv. 27(14): 3819-3842. https://dx.doi.org/10.1007/s10531-018-1631-x
In: Biodiversity and Conservation. Kluwer Academic Publishers/Springer: London. ISSN 0960-3115; e-ISSN 1572-9710
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| Trefwoord |
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| Author keywords |
Marine Spatial Planning; Species richness; Rarity; Endemism; Threatened species |
| Auteurs | | Top |
- Morzaria-Luna, H.N.
- Cruz-Piñon, G.
- Brusca, R.C.
- López-Ortiz, A.M.
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- Moreno-Báez, M.
- Reyes-Bonilla, H.
- Turk-Boyer, P.
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| Abstract |
As marine systems are threatened by increasing human impacts, mechanisms to maintain biodiversity and ecosystem functions and services are needed. Protecting areas of conservation importance may serve as a proxy for maintaining these functions, while also facilitating efficient use and management of limited resources. Biodiversity hotspots have been used as surrogates for spatial conservation importance; however, as many protected areas have been established opportunistically and under differing criteria, it is unclear how well they actually protect hotspots. We evaluated how well the current protected area network and priority areas selected through previous systematic conservation planning exercises preserve biodiversity hotspots in the Gulf of California, Mexico. We also determined spatial congruence between biodiversity hotspots based on different criteria, which may determine their ability to be used as surrogates for each other. We focus on the Gulf of California because it is a megadiverse system where limited information regarding species diversity and distribution has constrained development of strategies for conservation and management. We developed a species occurrence database and identified biodiversity hotspots using four different criteria: species richness, rarity, endemism, and threatened species. We interpolated species occurrence, while accounting for heterogeneous sampling efforts. We then assessed overlap of hotspots with existing protected areas and priority areas, and between hotspots derived by distinct criteria. We gathered 286,533 occurrence records belonging to 12,105 unique species, including 6388 species identified as rare, 642 as endemic, and 386 as threatened. We found that biodiversity hotspots showed little spatial overlap with areas currently under protection and previously identified priority areas. Our results highlight the importance of distinct spatial areas of biodiversity and suggest that different ecological mechanisms sustain different aspects of diversity and multiple criteria should be used when defining conservation areas. |
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