Research Fishery Biologist
Email:
dbunnell@usgs.gov
Office Phone:
734-214-9324
Fax:
734-994-8780
ORCID:
0000-0003-3521-7747
Location
1451 Green Road
Ann Arbor
, MI
48105
US
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Description of Work USGS will conduct seasonal sampling of benthic invertebrates, zooplankton, prey fish, and their diets to complement the seasonal lower trophic level sampling by EPA. A point of emphasis is describing the vertical distribution of planktivores and their zooplankton prey, to fill a knowledge gap on these predator/prey interactions. These data will provide a more holistic understanding of how invasive-driven, food-web changes could be altering energy available to sport fishes in the Great Lakes and used to build bioenergetics models that can evaluate whether zooplankton dynamics are being driven by limited resources or excessive predation. Understanding the key drivers of zooplankton will provide...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Accountability,
CSMI,
Ecosystem health,
Energy transfer,
Fish production, All tags...
GLRI,
Great Lakes Restoration Initiative,
Great Lakes Restoration Initiative,
Invasive Species,
Invasive species,
Lake,
Lake:Lake Huron,
Predator/prey balance,
Template 183,
Trend analysis,
Uploaded in Batch,
Watershed,
Watershed:Lake Huron Basin, Fewer tags
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These data consist of a multi-trophic, day vs. night, nearshore to offshore transect approach for data collection for this Cooperative Science and Monitoring Initiative effort at two northwestern Lake Huron sites near Hammond Bay and Thunder Bay, Michigan. Zooplankton and Mysis samples were collected monthly from April-October while benthos and prey fish samples were collected seasonally during Spring, Summer, and Fall. Invertebrate taxa (zooplankton, Mysis, benthic macroinvertebrates) were identified, enumerated, and measured using a dissecting microscope. Diet items of the prey fish were processed similarly to the other samples in terms of taxonomy. These data were used to calculate densities of fish prey items...
Categories: Data;
Tags: Aquatic Biology,
Ecology,
Geography,
Lake Huron,
Limnology, All tags...
Northwestern Lake Huron,
USGS Science Data Catalog (SDC),
Zooplankton,
aquatic ecosystems,
biota,
community ecology,
environment,
fisheries biology,
food web,
inlandWaters,
population and community ecology, Fewer tags
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These data consist of larval fish and water profile data collected with a nearshore to offshore transect approach at 9 transects throughout Lake Huron. Larval fish and their stomach contents were identified, enumerated, and measured (if possible) using a dissecting microscope. These data were used to calculate densities of potential fish prey items (what is available in the environment) and compare that to what the fishes ate for selectivity analysis. Larval fish age estimation based on daily growth rings from otoliths was also conducted. These data are in raw form. The water profile data were collected using a bathythermograph and bin-averaged at the 1 m level. Environmental prey data are available at the following...
Categories: Data;
Tags: Aquatic Biology,
Ecology,
Lake Huron,
Limnology,
Michigan, All tags...
Northwestern Lake Huron,
Ontario,
Planktonic Biota,
Southwestern Lake Huron,
USGS Science Data Catalog (SDC),
Zooplankton,
aquatic ecosystems,
biota,
community ecology,
environment,
field sampling,
fish,
fish,
fisheries biology,
food web,
inlandWaters,
invertebrates,
invertebrates,
plankton,
population and community ecology,
species diversity,
specimen collecting, Fewer tags
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Abstract (from AFS): Inland fisheries, defined as finfish caught in lakes, rivers, and other water bodies, provide economic value and a source of protein at local and international levels. However, no comprehensive compilation of U.S. inland commercial fisheries exists. We sought to obtain data across all 50 states during 1990–2015 and noted a small, but significant, decline in harvest. The minimum harvest averaged 41,427 tonnes during 2009–2015 and peaked in 1995 with a minimum harvest of 49,951 tonnes. During 2009–2015, harvest and taxonomic composition varied regionally: eastern interior (the highest regional harvest, dominated by coregonines and carp), western interior (carp and Clupeidae), Gulf (catfish and...
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These data describe the catch and biological data from 363 bottom-set gill-net lifts distributed throughout Lake Michigan (including main basin and Green Bay) between April and November in 1930–1932. Data collected from the R/V Fulmar were recorded in notebooks and are now archived at the U.S. Geological Survey’s Great Lakes Science Center. Each lift included 1–7 gangs of linen gill nets. Each gang comprised 3–5 panels each having a length of 155 m, a height of 1.5 m, and a (stretch-)mesh size of either 60, 64, 67, 70, or 76 mm. The digitization of the Fulmar data notebooks was started in the late 1990s and finished in this study.
Categories: Data;
Tags: Aquatic Biology,
Cisco,
Ecology,
Fishing with Benthic Fixed Gear,
Gill net, All tags...
Lake Michigan,
Lake Michigan,
USGS Science Data Catalog (SDC),
benthic ecosystems,
biota,
fish,
fisheries biology,
fishery management,
freshwater ecosystems,
habitats,
inland fishery resources, Fewer tags
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