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Biodiversity and Archeological Conservation Connected: Aragonite Shell Middens Increase Plant Diversity.


ABSTRACT: Natural and cultural heritage sites frequently have nonoverlapping or even conflicting conservation priorities, because human impacts have often resulted in local extirpations and reduced levels of native biodiversity. Over thousands of years, the predictable winter rains of northwestern Baja California have weathered calcium from the clam shells deposited by indigenous peoples in middens along the coast. The release of this calcium has changed soil properties, remediated sodic and saline soils, and resulted in a unique microhabitat that harbors plant assemblages very different from those of the surrounding matrix. Native plant biodiversity and landscape heterogeneity are significantly increased on the anthropogenic soils of these shell middens. Protection of this cultural landscape in the Anthropocene will further both archeological and biodiversity conservation in these anthropogenic footprints from the Holocene. Along these coasts, natural and cultural heritage priorities are overlapping and mutually beneficial.

SUBMITTER: Vanderplank SE 

PROVIDER: S-EPMC4776670 | biostudies-literature | 2014 Mar

REPOSITORIES: biostudies-literature

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Biodiversity and Archeological Conservation Connected: Aragonite Shell Middens Increase Plant Diversity.

Vanderplank Sula E SE   Mata Sergio S   Ezcurra Exequiel E  

Bioscience 20140204 3


Natural and cultural heritage sites frequently have nonoverlapping or even conflicting conservation priorities, because human impacts have often resulted in local extirpations and reduced levels of native biodiversity. Over thousands of years, the predictable winter rains of northwestern Baja California have weathered calcium from the clam shells deposited by indigenous peoples in middens along the coast. The release of this calcium has changed soil properties, remediated sodic and saline soils,  ...[more]

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