Spatial and temporal variability of mesozooplankton and tintinnid ciliates in a seasonally hypersaline estuary |
| |
Authors: | David T Elliott Ronald S Kaufmann |
| |
Institution: | 1.Department of Marine Science and Environmental Studies,University of San Diego,San Diego |
| |
Abstract: | The zooplankton community of Mission Bay, San Diego, California, was monitored over two years, to study spatial and temporal
patterns and the response of zooplankton species composition to environmental variation. Data were collected every two weeks
from six stations and included hydrographic parameters, dissolved nutrient concentrations, and phytoplankton and zooplankton
species composition. Hydrography varied seasonally, along a spatial gradient from the mouth to the back of the bay, and between
the two years around the influence of rainfall. Spatially, Mission Bay could be divided into three regions during this study
based on hydrography and zooplankton species composition. Zooplankton species composition followed a predictable seasonal
progression, with different groups of species being characteristic to particular times of the year. Variability in zooplankton
species composition was also evident between years, as certain species were more common in one or the other year of the study.
Spatial patterns were more consistent than temporal ones, and related to distance from the mouth of the bay during much of
the year and distance from freshwater inlets during the relatively short rainy season. Multivariate analysis revealed that
variation in zooplankton species composition was best related to measured abiotic factors (temperature, salinity, rainfall,
and tidal velocity). |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|