scholarly journals Species diversity and community structure of crustacean zooplankton in the highland small waterbodies in Northwest Yunnan, China

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e12103
Author(s):  
Xing Chen ◽  
Qinghua Cai ◽  
Lu Tan ◽  
Shuoran Liu ◽  
Wen Xiao ◽  
...  
Keyword(s):  
Community Structure ◽  
Yangtze River Basin ◽  
Zooplankton Community ◽  
Crustacean Zooplankton ◽  
Spatial Variables ◽  
Small Waterbodies ◽  
Northwest Yunnan ◽  
The Yangtze River Basin ◽  
Dry Seasons ◽  
Guizhou Plateau

Small waterbodies are a unique aquatic ecosystem with an increasing recognition for their important role in maintaining regional biodiversity and delivering ecosystem services. However, small waterbodies in Northwest Yunnan, one of the most concerned global biodiversity hot-spots, remain largely unknown. Here, we investigated the community structure of crustacean zooplankton and their relationships with limnological, morphometric and spatial variables in the highland small waterbodies in Northwest Yunnan in both the dry (October 2015) and rainy (June 2016) seasons. A total of 38 species of crustacean zooplankton were identified in our study, which is significantly higher than many other reported waterbodies in the Yunnan–Guizhou plateau as well as in the Yangtze River basin. This suggests that the highland small waterbodies are critical in maintaining regional zooplankton diversity in Northwest Yunnan. Meanwhile, we found limnological variables could explain most variation of crustacean zooplankton community, comparing to the morphometric and spatial variables in both the rainy and dry seasons. Our study revealed the diversity and community structure of crustacean zooplankton in the highland small waterbodies in Northwest Yunnan and highlighted the importance of small waterbodies in maintaining regional biodiversity.

Crustacean zooplankton community structure in temporary and permanent grassland ponds

Hydrobiologia ◽  
2009 ◽  
Vol 632 (1) ◽  
pp. 225-233 ◽  
Author(s):  
S. Matthew Drenner ◽  
Stanley I. Dodson ◽  
Ray W. Drenner ◽  
John E. Pinder III
Keyword(s):  
Community Structure ◽  
Zooplankton Community ◽  
Crustacean Zooplankton ◽  
Zooplankton Community Structure ◽  
Permanent Grassland

scholarly journals Zooplankton Community Response to Seasonal Hypoxia: A Test of Three Hypotheses

Diversity ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 21 ◽  
Author(s):  
Julie E. Keister ◽  
Amanda K. Winans ◽  
BethElLee Herrmann
Keyword(s):  
Community Structure ◽  
Puget Sound ◽  
Temporal Stability ◽  
Zooplankton Community ◽  
Community Response ◽  
Crustacean Zooplankton ◽  
Zooplankton Abundance ◽  
Calanoid Copepods ◽  
Low Oxygen ◽  
Seasonal Hypoxia

Several hypotheses of how zooplankton communities respond to coastal hypoxia have been put forward in the literature over the past few decades. We explored three of those that are focused on how zooplankton composition or biomass is affected by seasonal hypoxia using data collected over two summers in Hood Canal, a seasonally-hypoxic sub-basin of Puget Sound, Washington. We conducted hydrographic profiles and zooplankton net tows at four stations, from a region in the south that annually experiences moderate hypoxia to a region in the north where oxygen remains above hypoxic levels. The specific hypotheses tested were that low oxygen leads to: (1) increased dominance of gelatinous relative to crustacean zooplankton, (2) increased dominance of cyclopoid copepods relative to calanoid copepods, and (3) overall decreased zooplankton abundance and biomass at hypoxic sites compared to where oxygen levels are high. Additionally, we examined whether the temporal stability of community structure was decreased by hypoxia. We found evidence of a shift toward more gelatinous zooplankton and lower total zooplankton abundance and biomass at hypoxic sites, but no clear increase in the dominance of cyclopoid relative to calanoid copepods. We also found the lowest variance in community structure at the most hypoxic site, in contrast to our prediction. Hypoxia can fundamentally alter marine ecosystems, but the impacts differ among systems.

The Structure of Crustacean Zooplankton Communities in Glaciated Eastern North America

1981 ◽  
Vol 38 (11) ◽  
pp. 1428-1437 ◽  
Author(s):  
J. C. Roff ◽  
W. G. Sprules ◽  
J. C. H. Carter ◽  
M. J. Dadswell
Keyword(s):  
Community Structure ◽  
North America ◽  
Zooplankton Community ◽  
Common Species ◽  
Crustacean Zooplankton ◽  
Eastern North America ◽  
Biological Interactions ◽  
Small Lakes ◽  
Mysis Relicta ◽  
Zooplankton Community Structure

The zooplankton community structure of 696 lakes in Pleistocene glaciated eastern North America indicated to us that glacial influence was the primary determinant of community structure. Using this criterion we successfully discriminated 82% of the lakes between glacial lakes, to which Diaptomus sicilis, Limnocalanus macrurus, Mysis relicta, and Senecella calanoides were restricted, and nonglacial lakes, to which Cyclops scutifer, Eubosmina longispina, Daphnia pulex, D. catawba, and other species were characteristic. A third large group of common species was distributed throughout the study area with no particular relation to glacial lake influence. No clear patterns in community structure with respect to size of zooplankters were discerned. Although some species distributions or abundances were consistent with the well-known predatory and competitive interactions among zooplankters typical of small lakes and ponds, for example, the negative correlation between the predatory Mysis relicta and Eubosmina longispina, most were not. We suggest that this arose partly because the study area is large and heterogeneous and partly because the biological interactions observed in small lakes and ponds may be less intense in the more physically complex environment of large lakes.Key words: zooplankton, community structure, glacial opportunists, multivariate analysis, zoogeography, size-efficiency hypothesis

scholarly journals Crustacean zooplankton community structure in Lake Bosten, Xinjiang

2011 ◽  
Vol 23 (6) ◽  
pp. 926-933
Author(s):  
WANG Songbo ◽  
◽  
XUE Qingju ◽  
GAO Guang ◽  
TANG Xiangming ◽  
...  
Keyword(s):  
Community Structure ◽  
Zooplankton Community ◽  
Crustacean Zooplankton ◽  
Zooplankton Community Structure

Application of fuzzy cluster analysis to Lake Simcoe crustacean zooplankton community structure

2001 ◽  
Vol 58 (2) ◽  
pp. 231-240 ◽  
Author(s):  
Kenneth H Nicholls ◽  
Claudiu Tudorancea
Keyword(s):  
Community Structure ◽  
Fuzzy Clustering ◽  
Zooplankton Community ◽  
Fuzzy Cluster ◽  
Crustacean Zooplankton ◽  
Sampling Station ◽  
Ecological Data ◽  
Zooplankton Community Structure ◽  
Cluster Membership ◽  
Lake Simcoe

Fuzzy clustering generates cluster membership weights that indicate how tightly each object is linked to its cluster relative to other clusters of a dendrogram. In a fuzzy clustering of the crustacean-zooplankton taxa of Lake Simcoe, a large (720 km2) hardwater lake in Ontario, Canada, we show how the membership weights can be used to rank all taxa for their contribution to the sampling unit (SU) classification, where the total number of SUs was 84 (7 years × 12 sampling sites). The validity of the results was confirmed by comparison with other more traditional methods of identifying variables important for object classifications and by permutation tests of matrix correlation before and after removal of low-ranked and highly ranked species. Fuzzy clustering of Lake Simcoe SUs also revealed (i) the likelihood of trends in zooplankton community composition over the 7-year period and (ii) differences in composition possibly related to sampling-station depth. In particular, the shallowest sampling station in southern Cook's Bay had a zooplankton community structure that differed significantly from other stations during all years of the study. As a preliminary screening or data exploration tool, fuzzy clustering is particularly useful for analysis of ecological data.

Zooplankton community responses to a novel forest insecticide, tebufenozide (RH-5992), in littoral lake enclosures

1998 ◽  
Vol 55 (3) ◽  
pp. 639-648 ◽  
Author(s):  
David P Kreutzweiser ◽  
John M Gunn ◽  
Dean G Thompson ◽  
Heather G Pollard ◽  
Marvin J Faber
Keyword(s):  
Community Structure ◽  
Repeated Measures ◽  
Zooplankton Community ◽  
Crustacean Zooplankton ◽  
Significant Treatment ◽  
Northern Ontario ◽  
Environmental Concentration ◽  
Oxygen Conductivity ◽  
Exponential Decline ◽  
Zooplankton Communities

The effects of tebufenozide (RH-5992), a potential forest insecticide, on zooplankton communities were determined in 16 littoral enclosures in a small forest lake of northern Ontario. Community structure in enclosures treated with 9, 36, or 157 µg tebufenozide/L ( 0.2, 0.7, and 3 times the expected environmental concentration) was compared with natural zooplankton communities in control enclosures. No significant treatment effects on zooplankton communities were detected, even at 3 times the expected environmental concentration. While some changes in community structure of crustacean zooplankton in enclosures occurred through the season, these did not appear to be related to the tebufenozide treatments. Tebufenozide residues in water dissipated following exponential decline kinetics with time to 50% dissipation (DT50) ranging from 32 to 35 days irrespective of initial concentration. There were no differences in pH, dissolved oxygen, conductivity, and phytoplankton abundance among treatment levels (repeated-measures ANOVA, p > 0.07).

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