The Relationship between Mollusks and Oxygen Concentrations in Todos Santos Bay, Baja California, Mexico
| Autor: | Victoria Díaz-Castañeda, J. Gabriel Kuk-Dzul |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
biology Article Subject Ecology Odostomia 010604 marine biology & hydrobiology Fauna Truncatella (gastropod) Acteocina Anachis Aquatic Science biology.organism_classification Bivalvia 010603 evolutionary biology 01 natural sciences Chione lcsh:Oceanography lcsh:Biology (General) Animal Science and Zoology lcsh:GC1-1581 Bay lcsh:QH301-705.5 Ecology Evolution Behavior and Systematics |
| Zdroj: | Journal of Marine Biology, Vol 2016 (2016) |
| ISSN: | 1687-9481 |
| DOI: | 10.1155/2016/5757198 |
| Popis: | This study describes the relationship between mollusks, physicochemical properties of seawater, and sediments under natural conditions of low impact. Thirty-nine stations were sampled in October 1994 using a Van Veen grab (0.1 m−2). Temperature, salinity, and dissolved oxygen (DO) concentrations of bottom water were obtained with a CTD. Organic matter content and sediment grain analysis were determined. A total of 836 mollusks were collected. Gastropoda was the most abundant (52%) and diverse class with 27 genera, followed by Bivalvia with eight genera and Scaphopoda with only one genus. According to CCA analysis, dominant mollusks were significantly related with high DO concentrations.Donax,Natica,Acteocina,Bulla,Anachis,Odostomia, andCrucibulumcan be classified as sensitive genera because they were found mainly in high oxygen concentrations (3.1–5.6 mL L−1); on the other hand,Cardiomya,Nuculana,Laevicardium,Chione,Truncatella, andDentaliumcan be classified as tolerant genera (1.0–5.6 mL L−1). Todos Santos Bay hosts a diverse malacological fauna (36 genera); our results show that the dominant genera were mainly related to high dissolved oxygen concentrations. Mollusks can be a useful tool in environmental monitoring programs related with oxygen depletion in coastal areas. |
| Databáze: | OpenAIRE |
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