Search Results - "Niemi, Gerald"

Application of Ecological Indicators by Niemi, Gerald J., McDonald, Michael E.

“…Ecological indicators have widespread appeal to scientists, environmental managers, and the general public. Indicators have long been used to detect changes in…”
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Incorporating weather in counts and trends of migrating Common Nighthawks by Kolbe, Stephen R, Niemi, Gerald J, Bracey, Annie M, Etterson, Matthew A, Grinde, Alexis R

“…Effective conservation planning for species of concern requires long-term monitoring data that can accurately estimate population trends. Supplemental or…”
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Avian communities of managed and wilderness hemiboreal forests by Zlonis, Edmund J., Niemi, Gerald J.

“…•Increased species richness and abundance of birds in wilderness hemiboreal forests.•Species associated with wilderness associated with mature, mixed, complex…”
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Standardized Measures of Coastal Wetland Condition: Implementation at a Laurentian Great Lakes Basin-Wide Scale by Uzarski, Donald G., Brady, Valerie J., Cooper, Matthew J., Wilcox, Douglas A., Albert, Dennis A., Axler, Richard P., Bostwick, Peg, Brown, Terry N., Ciborowski, Jan J. H., Danz, Nicholas P., Gathman, Joseph P., Gehring, Thomas M., Grabas, Greg P., Garwood, Anne, Howe, Robert W., Johnson, Lucinda B., Lamberti, Gary A., Moerke, Ashley H., Murry, Brent A., Niemi, Gerald J., Norment, Christopher J., Ruetz, Carl R., Steinman, Alan D., Tozer, Douglas C., Wheeler, Ryan, O’Donnell, T. Kevin, Schneider, John P.

“…Since European settlement, over 50 % of coastal wetlands have been lost in the Laurentian Great Lakes basin, causing growing concern and increased monitoring…”
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Influence of landscape, habitat, and species co-occurrence on occupancy dynamics of Canada Warblers by Grinde, Alexis R, Niemi, Gerald J

“…The Canada Warbler (Cardellina canadensis) is a species of high conservation importance because of its low overall density and long-term widespread population…”
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Increasing marsh bird abundance in coastal wetlands of the Great Lakes, 2011–2021, likely caused by increasing water levels by Tozer, Douglas C, Bracey, Annie M, Fiorino, Giuseppe E, Gehring, Thomas M, Gnass Giese, Erin E, Grabas, Greg P, Howe, Robert W, Lawrence, Gregory J, Niemi, Gerald J, Wheelock, Bridget A, Ethier, Danielle M

“…Wetlands of the Laurentian Great Lakes of North America (i.e., lakes Superior, Michigan, Huron, Erie, and Ontario) provide critical habitat for marsh birds. We…”
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A synthesis of species interactions, metacommunities, and the conservation of avian diversity in hemiboreal and boreal forests by Grinde, Alexis R., Niemi, Gerald J.

“…The rate at which climate is changing in northern latitudes presents a significant threat to bird populations that rely on boreal forests. Alterations in the…”
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Point count offsets for estimating population sizes of north American landbirds by Edwards, Brandon P. M., Smith, Adam C., Docherty, Teegan D. S., Gahbauer, Marcel A., Gillespie, Caitlyn R., Grinde, Alexis R., Harmer, Taylor, Iles, David T., Matsuoka, Steven M., Michel, Nicole L., Murray, Andrew, Niemi, Gerald J., Pasher, Jon, Pavlacky, David C., Robinson, Barry G., Ryder, Thomas B., Sólymos, Péter, Stralberg, Diana, Zlonis, Edmund J.

“…Bird monitoring in North America over several decades has generated many open databases, housing millions of structured and semi‐structured bird observations…”
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Do vegetation boundaries display smooth or abrupt spatial transitions along environmental gradients? Evidence from the prairie–forest biome boundary of historic Minnesota, USA by Danz, Nicholas P, Frelich, Lee E, Reich, Peter B, Niemi, Gerald J, Fridley, Jason

“…QUESTIONS: Two alternative mechanisms of abrupt vegetation change across ecological boundaries have been proposed: (1) concomitantly abrupt gradients in…”
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Invasions of non-native earthworms related to population declines of ground-nesting songbirds across a regional extent in northern hardwood forests of North America by Loss, Scott R., Niemi, Gerald J., Blair, Robert B.

“…Non-native invasive earthworms ( Lumbricus spp.) substantially change previously earthworm-free hardwood forests of North America by consuming the leaf litter…”
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Patterns in diurnal airspace use by migratory landbirds along an ecological barrier by Peterson, Anna C, Niemi, Gerald J, Johnson, Douglas H

“…Migratory bird populations and survival are affected by conditions experienced during migration. While many studies and conservation and management efforts…”
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Habitat use and characteristics of Connecticut Warbler during the nesting and post-fledging period by Grinde, Alexis, Kolbe, Stephen, Snow, Kara, Howland, Brett, Niemi, Gerald, Slesak, Robert, Windmuller-Campione, Marcella

“…Widespread declines in breeding bird populations have been documented across North America since the 1970s, and concerns about loss of avian biodiversity are…”
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Application of habitat association models across regions: Useful explanatory power retained in wetland bird case study by Elliott, Lisa H., Bracey, Annie M., Niemi, Gerald J., Johnson, Douglas H., Gehring, Thomas M., Gnass Giese, Erin E., Fiorino, Giuseppe E., Howe, Robert W., Lawrence, Gregory J., Norment, Christopher J., Tozer, Douglas C., Igl, Lawrence D.

“…Species often exhibit regionally specific habitat associations, so habitat association models developed in one region might not be accurate or even appropriate…”
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Analysis of combined data sets yields trend estimates for vulnerable spruce-fir birds in northern United States by Ralston, Joel, King, David I., DeLuca, William V., Niemi, Gerald J., Glennon, Michale J., Scarl, Judith C., Lambert, J. Daniel

“…•Point count surveys with disparate protocols combined to estimate population trends.•Significant declines detected for 50% of spruce-fir forest…”
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Feather mercury increases with feeding at higher trophic levels in two species of migrant raptors, Merlin (Falco columbarius) and Sharp-shinned Hawk (Accipiter striatus) by Keyel, Edward R, Etterson, Matthew A, Niemi, Gerald J, Evers, David C, DeSorbo, Christopher R, Hoffman, Joel C, Nichols, John W, Li, Yang, Nicoletti, Frank

“…Mercury (Hg) is a toxic heavy metal that, when methylated to form methylmercury (MeHg), bioaccumulates in exposed animals and biomagnifies through food webs…”
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Foraging Ecology Differentiates Life Stages and Mercury Exposure in Common Terns (Sterna hirundo) by Bracey, Annie M, Etterson, Matthew A, Strand, Frederick C, Matteson, Sumner W, Niemi, Gerald J, Cuthbert, Francesca J, Hoffman, Joel C

“…ABSTRACT Some populations of common terns (Sterna hirundo) breeding at inland lakes in North America are declining, including the Laurentian Great Lakes. Terns…”
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Integrated measures of anthropogenic stress in the U.S. Great lakes basin by Danz, Nicholas P, Niemi, Gerald J, Regal, Ronald R, Hollenhorst, Tom, Johnson, Lucinda B, Hanowski, JoAnn M, Axler, Richard P, Ciborowski, Jan J H, Hrabik, Thomas, Brady, Valerie J, Kelly, John R, Morrice, John A, Brazner, John C, Howe, Robert W, Johnston, Carol A, Host, George E

“…Integrated, quantitative expressions of anthropogenic stress over large geographic regions can be valuable tools in environmental research and management…”
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Effects of experimental playbacks on availability for detection during point counts by Grinde, Alexis R., Niemi, Gerald J., Etterson, Matthew A.

“…Point counts are the most commonly used technique for surveying passerines during the breeding season. Several methods for estimating probabilities of…”
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Variation in bird-window collision mortality and scavenging rates within an urban landscape by Bracey, Annie M., Etterson, Matthew A., Niemi, Gerald J., Green, Richard F.

“…Avian mortality from collisions with windows and buildings is one of the top sources of anthropogenic mortality of birds. Each year in the United States, an…”
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Estimating the Effects of Detection Heterogeneity and Overdispersion on Trends Estimated from Avian Point Counts by Etterson, Matthew A., Niemi, Gerald J., Danz, Nicholas P.

“…Point counts are a common method for sampling avian distribution and abundance. Although methods for estimating detection probabilities are available, many…”
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