Continue to collect baseline information of larval coregonine community validated with genetic species identification. Sampling of the Saginaw Bay larval coregonine community was completed during the spring of 2021 using pelagic ichthyoplankton tows, beach seines, and...
Post Archive:
Population Monitoring
Clarifying larval Cisco and Lake Whitefish spatial ecology across habitat gradients to support evaluation, restoration, and management
Standardized early life monitoring programs for Cisco (Coregonus artedi) and Lake Whitefish (C. clupeaformis) are needed to evaluate outcomes of restoration interventions (Bunnell et al. 2023), but designing surveys that effectively sample each species ultimately...
Continued assessment of Cisco reintroduction in Saginaw Bay, Lake Huron
Developing evaluation methods for stocked cisco in Lake Erie
Determining when and how Cisco and Lake Whitefish recruitment can be reliably indexed to support evaluation, restoration, and management
Contemporary distribution and abundance of larval cisco in Lake Michigan
Continuing evaluation components of the Lake Huron Technical Committee’s Cisco reintroduction study for FY25
Cisco (Coregonus artedi) are functionally absent from the western main basin of Lake Huron and as such restoring Cisco “to a significant level” (DesJardine, 1995) remains an unmet objective for Lake Huron management agencies (Riley and Ebener, 2020). In 2007 the Lake...
Evaluating Bloater (Coregonus hoyi) natural reproduction in Lake Ontario
Evaluation of fisheries restoration actions such as the reestablishment of coregonine populations requires a life stage approach to evaluate program success and improve understanding on potential recruitment bottlenecks. Prior to their extirpation, Lake Ontario...
Expanding efforts to document and understand Great Lakes coregonine river spawning
Our project team sampled five Great Lakes tributaries in fall 2022 and spring 2023 to assess evidence of tributary spawning by coregonines, such as cisco Coregonus artedi and lake whitefish C. clupeaformis. Specifically, we sampled the Chaumont River, Niagara River,...
Evaluating post-stocking movement, mortality, and habitat use of fall-stocked cisco Coregonus artedi in Saginaw Bay, Lake Huron with acoustic telemetry
The Lake Huron Committee aims to restore cisco Coregonus artedi in Lake Huron (DesJardine et al. 1995; Lake Huron Technical Committee 2023). To that end, the Lake Huron Technical Committee has implemented a plan for re-establishing a population in the main basin of...
Supporting evaluation components of the Lake Huron Technical Committee’s Cisco reintroduction study for FY24
Development of conceptual early life history models and evaluation of sampling techniques in support of long-term monitoring for cisco and lake whitefish
Recruitment is set early during life (<2 years of age) for many fish populations (Hjort 1914, Houde 1987). From fertilization to juvenile stages, fishes are susceptible to abiotic and biotic factors that directly or indirectly influence growth, condition, and survival (Ludsin et al. 2014, Pritt et al. 2014). The mechanistic processes influencing recruitment, their interactions,and the timing at which they are most influential remains unclear for many fishes. By improving understanding of early life history (ELH) ecology and recruitment constraints, we can improve monitoring and support more informed management decisions. Long-term ELH monitoring programs that inform management are limited for cisco (Coregonus artedi) across the Great Lakes.
Supporting evaluation components of the Lake Huron Technical Committee’s Cisco reintroduction study for FY23
Cisco (Coregonus artedi) are functionally absent from the western main basin of Lake Huron and as such restoring cisco “to a significant level” (DesJardine 1995) remains an unmet objective for Lake Huron management agencies (Liskauskas et al. 2007). In 2007 the Lake...
Supporting evaluation components of the Lake Huron Technical Committee’s Cisco reintroduction study: a multi-agency effort to promote Cisco recovery in the western main basin of Lake Huron (FY22)
The U.S. Fish and Wildlife service conducted larval coregonine surveys in 2022 aimed at documenting the current distribution, composition, and density of the larval coregonid community in Saginaw Bay. Sampling of the ichthyoplankton community was limited to pelagic...
Use of multi-gear sampling to improve abundance estimates of demersal Coregonines in the Great Lakes
Acoustic and mid-water trawl surveys have been used to estimate abundance and biomass of Great Lakes coregonines for decades. Acoustic sampling has potential to be an important tool in the assessment of future coregonine restoration efforts because new populations...
Supporting evaluation components of Lake Huron Technical Committee’s cisco reintroduction study: a multi-agency effort to promote cisco recovery in the western main basin of Lake Huron (FY21)
The U.S. Fish and Wildlife service conducted larval coregonine surveys in 2021 aimed at documenting the current distribution, composition, and density of the larval coregonid community in Saginaw Bay. Sampling of the ichthyoplankton community was limited to pelagic...
Supporting evaluation components of the Lake Huron Technical Committee’s cisco reintroduction study: a multi-agency effort to promote cisco recovery in the western basin of Lake Huron (FY19)
The U.S. Fish and Wildlife service conducted two surveys in 2019 aimed at documenting the current distribution, composition, and density of the larval coregonid community in Saginaw Bay. Sampling was limited to pelagic ichthyoplankton and beach seining due to the...
Inventorying Great Lakes survey and life history information to facilitate coregonine science, conservation, and restoration
Population models are a critical tool for informing native fish conservation and the types of models that can be developed are determined by data availability. In the Great Lakes, the size of the ecosystems and the multi-organizational management approach means...
Inventory and assessment of coregonine spawning locations in lakes Erie and Ontario, including connecting channels
This project involved two phases. First, to identify locations of key habitats for coregonines in lakes Erie and Ontario and their respective connecting channels, we conducted a literature review of historical spawning, nursery, and adult habitat sites where...
Redesigning nearshore and offshore fish community protocols to incorporate new species identification approaches and determine optimal sampling strategies
The objective of this work was to begin the process of describing Lake Superior larval ciscoe population dynamics at the species level, something which was not possible prior to 2019 (Ackiss et al. 2020) and use this information to develop standard collection...
Dedicated surveys to describe the distribution and abundance of a remnant cisco population in Green Bay
Contemporary spawning of cisco and lake whitefish is not known to occur in southern Green Bay but in recent years a small number (< 10 per year) of cisco adults have been recovered along the Door Peninsula, and lake whitefish larvae have been captured in drift...
Are cisco and lake whitefish competitors in the Great Lakes? Implications for future reintroduction efforts
The overall objective of this project was to evaluate historical commercial gill net fishery data available for State of Michigan waters of Lakes Superior, Michigan, and Huron for evidence of potential negative interactions between Cisco Coregonus artedi and Lake...