A5021417085- Plant and animal studies
- Ecology and Vegetation Dynamics Studies
- Species Distribution and Climate Change
- Lepidoptera: Biology and Taxonomy
- Rangeland and Wildlife Management
- Fire effects on ecosystems
- Insect Pheromone Research and Control
- Avian ecology and behavior
- Animal Ecology and Behavior Studies
- Botany, Ecology, and Taxonomy Studies
- Biological Control of Invasive Species
- Wildlife Ecology and Conservation
- Insect and Pesticide Research
- Isotope Analysis in Ecology
- Plant Parasitism and Resistance
- Entomological Studies and Ecology
- Freshwater macroinvertebrate diversity and ecology
- Insect and Arachnid Ecology and Behavior
- Fish Ecology and Management Studies
- Forest ecology and management
- Peatlands and Wetlands Ecology
- Botany and Plant Ecology Studies
- Survey Sampling and Estimation Techniques
- Genetic and phenotypic traits in livestock
- Animal Diversity and Health Studies
Ashland (United States)
2018
Numerous declines have been documented across insect groups, and the potential consequences of losses are dire. Butterflies most surveyed taxa, yet analyses limited in geographic scale or rely on data from a single monitoring program. Using records 12.6 million individual butterflies >76,000 surveys 35 programs, we characterized overall species-specific butterfly abundance trends contiguous United States. Between 2000 2020, total fell by 22% 554 recorded species. Species-level were...
Tallgrass prairie butterfly surveys in recent decades four states the USA indicate numerous declines of prairie-specialist butterflies including Speyeria idalia, Oarisma poweshiek, Atrytone arogos, Hesperia dacotae, and H. ottoe fire-managed preserves, large high-quality ones. These results replicate previous findings, indicating that upon initiation conservation action, both cessation prior management inception new affect specialists negatively can be as great on reserves non-reserves....
We surveyed butterflies in prairies, pine-oak barrens, and degraded grasslands during 1988–2013 southern Wisconsin, USA. In prairie preserves (primarily managed with frequent fire), both specialist non-specialist "grassland" grass-skippers declined strongly. Specialists inhabiting the native herbaceous flora of barrens that had little management but relatively consistent vegetation over time large fluctuations more stable trends. Grassland showed similar trends fields time. Significant...
Abstract Insects are the most ubiquitous and diverse group of eukaryotic organisms on Earth, forming a crucial link in terrestrial freshwater food webs. They have recently become subject headlines because observations dramatic declines some places. Although there hundreds long‐term insect monitoring programs, global database for data assemblages has so far remained unavailable. In order to facilitate synthetic analyses abundance changes, we compiled (≥10 yr) studies insects (many also...
-The Xerces Society's Fourth of July Butterfly Count (4J), patterned after the popular Christmas Bird (CBC), is a nationwide, volunteer, annual 1-day census butterflies and skippers at selected sites. The ornithological literature reviewed, although not exhaustively, to summarize methods for analyzing CBC data list types studies using these data. Applications ornithologists' experiences with, concerns about, uses for, 4J are discussed, as well issues, problems opportunities specific...
During 1993–1996, two teams (Schlicht, Swengels) surveyed the same Minnesota prairies, but without any coordination of sites, routes, methods, dates, and results between teams. In 27 instances, both site in year 30 June 18 July. For most frequently recorded species, abundance indices (individuals/h per site) significantly covaried for 11 (61%) including 2/3 prairie specialists tested. No species correlated negatively, 17/18 had positive correlations, preponderance correlations was...
At 106 tallgrass prairies in the midwestern USA, 18,055 individuals of six fritillary species (Lepidoptera: Nymphalidae) were counted 552.9 hr and 987.1 kill transect survey effort from 14 June to 13 September during 1988-96. The relative abundance Euptoieta claudia, Speyena cybele, S. aphrodite, idalia, Boloria selene, B. bellona was analyzed for significant patterns five habitat factors. Topographic diversity (i.e., whether site uniform or contained both uplands lowlands) produced most...
Abstract Changes in phenology are a common response to climate change, but their impact on population dynamics is often ambiguous and at‐risk species omitted from most analyses. We assessed the relationship between change abundance for 114 butterfly populations of 31 five families 10 US states. used data Pollard‐walk similar monitoring programmes which count were collected multiple occasions per year. also information managers site‐level management interventions. To estimate abundance, we...
Journal Article Diet of Northern Saw-Whet Owls in Southern Wisconsin Get access Scott R. Swengel, Swengel 909 Birch Street, Baraboo, WI 53913 Search for other works by this author on: Oxford Academic Google Scholar Ann B. The Condor, Volume 94, Issue 3, 1 August 1992, Pages 707–711, https://doi.org/10.2307/1369255 Published: 01 1992 history Received: 03 December 1991 Accepted: 28 February
We monitored Wisconsin populations of the Karner blue (Lycaeides melissa samuelis Nabokov, Lepidoptera: Lycaenidae) during 1990-2004. surveyed consecutive spring and summer broods in two contiguous central counties (Jackson, Wood), starting with three sites 1990 expanding to 14 by 1996 (“constant-site monitoring”). In northwestern (Burnett County), we started constant-site monitoring 11 1991, 15 1998. Population indices (Karner individuals per km on peak survey site brood) from constant were...
Transect bird surveys were conducted at 43 tallgrass prairies in southwestern Missouri, U.S.A. mid-June each year from 1992 to 1999. Litter volume on and near the ground was estimated a nine-point scale during 1994 The relative importance of management type (rotational burning, rotational haying, or combination both) litter abundance analysed for three declining grassland songbirds: Henslow's Sparrow Ammodramus henslowii, Grasshopper A. savannarum, Dickcissel Spiza americana. Haying resulted...
-Monarchs reported in North America N of Mexico the 4th ofJuly Butterfly Count (4JC) for 1977-1994 were analyzed population fluctuations. From 1977 to 1986 mean number monarchs per hour eastern varied significantly only one nine pairs consecutive years. 1994, five eight year-pairs, with a nearly equal increases and decreases. However, amount variation within each year-pair was similar 1977-1986 19861994 (median difference ca. factor 2). Although Atlantic midwestern subregions covaried four...
We counted butterflies on transect surveys during Hesperia ottoe flight period in 1988-2011 at tallgrass prairie preserves four states (Illinois, Iowa, Minnesota, Wisconsin), divided into units cross-referenced to vegetation type and management history. H. occurred only dry sand types, was significantly more abundant undegraded than semi-degraded prairie, discontinuous sod (with numerous unvegetated areas due bare and/or rock outcrops) continuous sod. This skipper small sites compared medium...
During 2002–2013, we surveyed butterflies in three types of bogs (pristine but naturally fragmented). Of the 75 surveyed, established 29 and 5 bog roadsides as long-term sites visited annually for 9–15 years. We studied patterns ten butterfly species' flight periods, annual variation, trend abundance over time, with respect to climatic variables. First observed date per year varied more spring than summer species. Jutta arctic Oeneis jutta between dramatically high numbers odd years low even...