Impact of Environment on the Spatio‐Temporal Distribution of Rotifers in the Tidal Guangzhou Segment of the Pearl River Estuary, China

Abstract

Rotifers were studied at two sites (Zhongda and Huangpu) in the tidal Guangzhou segment of the Pearl River in China, from April 2004 to March 2007. Fifty-six species were recorded. Rotifers were most abundant during late fall. Overall, densities ranged from 4 to 5975 ind. L -1

Flood‐Pulse Effects on Zooplankton Assemblages in a River‐Floodplain System (Gemenc Floodplain of the Danube, Hungary)

“…Our results affirm the effects of hydrological regime on potamoplankton assemblages in the case of a near-natural river-floodplain system (WARD, 1989). ROSETTI et al (2009) found no direct effects of hydrological regime on the zooplankton in the main channel of the Po River (Italy), but they did see a significant seasonal correlation of zooplankton structure to temperature and chlorophyll-a (GUELDA et al, 2005, WANG et al, 2009. According to their results the structure of zooplankton assemblages in the main arm of the Danube showed no significant differences between flooding and receding events.…”

Structure of rotifer assemblages in shallow waterbodies of semi-arid northwest Iran differing in salinity and vegetation cover

“…These have included water depth (Bini et al, 2007), transparency (Angeler et al, 2010), nutrients and food resources (Branco et al, 2002;Obertegger et al, 2011), biotic interactions, i.e., predation and competition (Devetter & Seda, 2006), and substrate type and complexity (Pejler & Bērziņ ŝ, 1993;Stefanidis & Papastergiadou, 2010). However, the most common environmental factors that have been estimated in relation to rotifer richness and abundance are temperature, dissolved oxygen (DO), pH, and salinity/electroconductivity (Branco et al, 2002;Neschuk et al, 2002;Bini et al, 2007;Wang et al, 2009;Bielańska-Grajner et al, 2011). This is most likely because of the general and elementary impacts of these factors on almost all other physico-chemical and biological parameters and the simplicity of their in situ and precise measurements.…”

“…Rotifera have been studied in a wide variety of aquatic ecosystems including rivers and estuaries (Neschuk et al, 2002;Wang et al, 2009), deep and shallow lakes (Branco et al, 2002;Š poljar et al, 2005), saline lakes , mining lakes (Bielańska-Grajner & Gładysz, 2010), bogs and peatlands (Bielańska-Grajner et al, 2011), and rice paddy and fish ponds (Segers & Sanoamuang, 2007). They have also been investigated across different geographical regions including tropical (Dagne et al, 2008), subtropical (Havens et al, 2007), and temperate (Kuczyńska-Kippen, 2005) areas globally.…”

Distinct difference of littoral rotifer community structure in two mangrove wetlands of Qi'ao Island, Pearl River estuary, China

“…It was similar to many other estuary aquatic systems. For instance, the abundance of planktonic rotifers was positively correlated with temperature and negatively correlated with salinity at Medaomen, one outfall of the Pearl River estuary (Hou 2011), and Huangpu site in upstream of the Pearl River estuary (Wang et al 2009). Azémar et al (2010) also found that salinity was the main spatial structuring factor for the Schelde River estuarine rotifer community.…”

“…It may result from the improper sampling methods. Samples collected with a 64-μm or larger mesh underestimate biodiversity because small animals are filtered through easily (Bottrell et al 1976;Wang et al 2009;Chick et al 2010;Tseng et al 2011). Besides, different researchers with varying levels of taxonomic skill can severely affect the results of species diversity (Segers 2008;Fontaneto et al 2012), abundance, community structure, etc.…”