Recovery of crustacean zooplankton communities from acid and metal contamination: comparing manipulated and reference lakes

1996 ◽  
Vol 53 (6) ◽  
pp. 1301-1327 ◽  
Author(s):  
N D Yan ◽  
W Keller ◽  
K M Somers ◽  
T W Pawson ◽  
R E Girard
Keyword(s):  
Metal Contamination ◽  
Crustacean Zooplankton ◽  
Zooplankton Communities ◽  
Reference Lakes

Crustacean zooplankton communities in lakes recovering from acidification

2002 ◽  
Vol 59 (4) ◽  
pp. 726-735 ◽  
Author(s):  
W Keller ◽  
N D Yan ◽  
K M Somers ◽  
J H Heneberry
Keyword(s):  
Large Scale ◽  
Zooplankton Community ◽  
Crustacean Zooplankton ◽  
Chemical Recovery ◽  
Species Dispersal ◽  
Aquatic Communities ◽  
Biological Recovery ◽  
Community Recovery ◽  
Zooplankton Communities ◽  
Reference Lakes

Large reductions in sulphur emissions at the Sudbury, Ont., Canada, smelters in recent decades have resulted in decreased lake acidity, and biological improvements have followed. Lakes in the Sudbury area offer a very unique opportunity to develop our understanding of the processes regulating biological restructuring in aquatic ecosystems recovering from acidification. Here, we examine changes in crustacean zooplankton communities that have accompanied the chemical recovery of Whitepine and Sans Chambre lakes, near Sudbury, over the last two decades. In both these formerly acidic lakes, pH has increased to ~6.0, and some zooplankton community recovery has occurred. However, zooplankton communities have not completely recovered based on multivariate comparisons with the community composition of reference lakes. Although a number of acid-sensitive species have appeared, many did not persist, or did not achieve abundances typical of the reference lakes. This indicates that zooplankton community recovery will most likely depend on biotic and abiotic interactions within these lakes and not on factors affecting species dispersal. Both chemical and biological factors have large influences on biological recovery processes. Assessing biological recovery is very important since the restoration of healthy aquatic communities is a major objective of large-scale sulphur emission control programs.

Changes in the crustacean communities of Lakes Michigan, Huron, and Erie following the invasion of the predatory cladoceran Bythotrephes longimanus

2004 ◽  
Vol 61 (11) ◽  
pp. 2111-2125 ◽  
Author(s):  
Richard P Barbiero ◽  
Marc L Tuchman
Keyword(s):  
Zooplankton Community ◽  
Crustacean Zooplankton ◽  
Bythotrephes Longimanus ◽  
Zooplankton Community Structure ◽  
Cladoceran Species ◽  
Invertebrate Predators ◽  
Predatory Cladoceran ◽  
Leptodora Kindti ◽  
Escape Responses ◽  
Zooplankton Communities

The crustacean zooplankton communities in Lakes Michigan and Huron and the central and eastern basins of Lake Erie have shown substantial, persistent changes since the invasion of the predatory cladoceran Bythotrephes in the mid-1980s. A number of cladoceran species have declined dramatically since the invasion, including Eubosmina coregoni, Holopedium gibberum, Daphnia retrocurva, Daphnia pulicaria, and Leptodora kindti, and overall species richness has decreased as a result. Copepods have been relatively unaffected, with the notable exception of Meso cyclops edax, which has virtually disappeared from the lakes. These species shifts have for the most part been consistent and equally pronounced across all three lakes. Responses of crustacean species to the Bythotrephes invasion do not appear to be solely a consequence of size, and it is likely that other factors, e.g., morphology, vertical distribution, or escape responses, are important determinants of vulnerability to predation. Our results indicate that invertebrate predators in general, and invasive ones in particular, can have pronounced, lasting effects on zooplankton community structure.

Crustacean zooplankton communities in Lake General Carrera (46°S) and their possible association with optical properties

Crustaceana ◽  
2013 ◽  
Vol 86 (4) ◽  
pp. 507-513 ◽  
Author(s):  
Patricio De los Ríos-Escalante ◽  
Esteban Quinán ◽  
Patricio Acevedo
Keyword(s):  
Optical Properties ◽  
Crustacean Zooplankton ◽  
Zooplankton Communities

scholarly journals LAKE ACIDIFICATION AND THE BIOLOGY OF ADIRONDACK LAKES: CRUSTACEAN ZOOPLANKTON COMMUNITIES

1984 ◽  
Vol 1 (1) ◽  
pp. 380-384 ◽  
Author(s):  
James W. Sutherland ◽  
Scott O. Quinn ◽  
Jay A. Bloomfield ◽  
Clifford A. Siegfried
Keyword(s):  
Lake Acidification ◽  
Crustacean Zooplankton ◽  
Adirondack Lakes ◽  
Zooplankton Communities

pH 6 as the threshold to use in critical load modeling for zooplankton community change with acidification in lakes of south-central Ontario: accounting for morphometry and geography

2003 ◽  
Vol 60 (2) ◽  
pp. 151-158 ◽  
Author(s):  
C A Holt ◽  
N D Yan ◽  
K M Somers
Keyword(s):  
Zooplankton Community ◽  
Single Species ◽  
Community Change ◽  
Step Function ◽  
Crustacean Zooplankton ◽  
Load Modeling ◽  
South Central ◽  
Species Abundances ◽  
Community Data ◽  
Zooplankton Communities

Identifying thresholds of biotic community change along stressor gradients may be useful to both ecologists and lake managers; however, there are several weaknesses in the thresholds that have been identified for zooplankton communities along acidity gradients. The thresholds are often based on a single species even though pH sensitivities vary among species. They often measure changes in species occurrences, though abundances may be a more responsive indicator of damage. Their identification may be confounded by spatial and morphometric factors if they are derived from lake surveys. Finally, the thresholds have usually been subjectively identified. Our goal was to establish a threshold in zooplankton community change along an acidity gradient that did not have these four common weaknesses. We used two crustacean zooplankton community metrics: species richness and scores of a correspondence analysis based on species abundances. Spatial and morphometric patterns were detected in the zooplankton community data and then extracted. The relationship between zooplankton and acidity was then modeled using a step function that objectively identified a threshold of community change at pH 6 for lakes in south-central Ontario.

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