A5040462566- Fish Ecology and Management Studies
- Botany and Plant Ecology Studies
- Environmental Conservation and Management
- Forest Ecology and Biodiversity Studies
- Peatlands and Wetlands Ecology
- Aquatic Invertebrate Ecology and Behavior
- Fish Biology and Ecology Studies
- Ecology and Vegetation Dynamics Studies
- Marine and fisheries research
- Isotope Analysis in Ecology
- Hydrology and Sediment Transport Processes
- Mediterranean and Iberian flora and fauna
- Ichthyology and Marine Biology
- Ecology and biodiversity studies
- Marine animal studies overview
- Species Distribution and Climate Change
- Bryophyte Studies and Records
- Aquatic Ecosystems and Phytoplankton Dynamics
- Forest Management and Policy
- Fish biology, ecology, and behavior
- Coastal wetland ecosystem dynamics
- Marine and coastal plant biology
- Lichen and fungal ecology
- Water Quality Monitoring Technologies
- Animal Vocal Communication and Behavior
Wageningen University & Research
2010-2024
University of Wisconsin–Milwaukee
2009-2023
U.S. Army Engineer Research and Development Center
2021
University of Michigan
2006
University of Wisconsin–Madison
2006
Loyola University Chicago
1982-2001
University of Chicago
1982-2001
University of California, Riverside
1992
University of Alaska Fairbanks
1985
Abstract The European Vegetation Archive ( EVA ) is a centralized database of vegetation plots developed by the IAVS Working Group Survey. It has been in development since 2012 and first made available for use research projects 2014. stores copies national regional vegetation‐ plot databases on single software platform. Data storage does not affect on‐going independent contributing databases, which remain property data contributors. uses prototype management TURBOVEG 3 joint multiple that...
Abstract Aim The EUNIS Habitat Classification is a widely used reference framework for European habitat types (habitats), but it lacks formal definitions of individual habitats that would enable their unequivocal identification. Our goal was to develop tool assigning vegetation‐plot records the system, use classify database, and compile statistically‐derived characteristic species combinations distribution maps these habitats. Location Europe. Methods We developed classification expert...
Abstract Aims Vegetation‐plot records provide information on the presence and cover or abundance of plants co‐occurring in same community. data are spread across research groups, environmental agencies biodiversity centers and, thus, rarely accessible at continental global scales. Here we present sPlot database, which collates vegetation plots worldwide to allow for exploration patterns taxonomic, functional phylogenetic diversity plant community level. Results version 2.1 contains from...
Vertical distributions of adult alewife (135–216 mm long) and Mysis relicta were measured acoustically on a 24 h basis during July, September, October 1975 June 1976 at station 8 km northeast Milwaukee, Wisconsin in 50 m water. Both concentrated the bottom day migrated upwards to base thermocline night. Extent timing vertical migrations coincided. During bright moonlight depths well below larger alewives within this layer while smaller thermocline. An examination stomach contents indicated...
Abstract Motivation Assessing biodiversity status and trends in plant communities is critical for understanding, quantifying predicting the effects of global change on ecosystems. Vegetation plots record occurrence or abundance all species co‐occurring within delimited local areas. This allows absences to be inferred, information seldom provided by existing datasets. Although many vegetation have been recorded, most are not available research community. A recent initiative, called ‘sPlot’,...
Abstract In a study of the quality Trichogramma pretiosum Riley (Hymenoptera: Trichogrammidae), we compared female wasps emerging from natural hosts, parasitized in laboratory or field with those factitious hosts used for commercial mass production. Females were larger, more fecund, and longer lived than hosts. Compared to small females, large are substantially fecund when honey (carbohydrate) is available but marginally unavailable. The size T. depends on two factors: host egg which it...
Particulate feeding, where fish orient to and take prey one at a time, is shown by the alewife, Alosa pseudoharengus, ciscoes Coregonus hoyi C. artedii. Specialized particulate feeding found in alewives for capturing strongly swimming such as Mysis relicta calanoid copepods. This involves simultaneous darting sucking. Alewives filter feed with mouth fully agape 0.5–2 s while driving hard tail. Ciscoes do not feed, but they display gulping behavior open close 2–3 times/s, drive tail, may more...
Abstract Pectoral fin spines have been the accepted structure for estimating age of various sturgeon species nearly 100 years, though other structures also used (otoliths, pectoral girdle, scutes, and caudal fulcra). Accuracy estimates using any these has not validated, so we report first use bomb radiocarbon ( 14 C) assays to assess validity ages estimated growth increments on spine otolith frontal cross sections from lake Acipenser fulvescens ; assessed known‐age sturgeon. Growth...
Plants can have constitutive leaf angles that are fixed and do not vary much among different growth environments. Several species, however, the ability to actively adjust their angles. Active repositioning be functional in avoiding detrimental environmental conditions, such as avoidance of heat stress complete submergence, or be, for example, utilized maximize carbon gain by positioning leaves relative incoming radiation. In recent years, major advances been made understanding molecular...
Aquatic food webs that incorporate multiple energy channels (e.g., nearshore benthic and pelagic) with varying productivity turnover rates convey stability to biological communities by providing independent sources. Within the Lake Michigan web, invasive dreissenid mussels have caused rapid changes web structure potentially altered through which consumers acquire energy. We used stable C N isotopes determine how has changed in past decade, coincident expansion of mussels, decreased pelagic...
Abstract Aims Although many phytosociological studies have provided detailed local and regional descriptions of coastal dune vegetation, a unified classification this vegetation in Europe the Mediterranean Basin has been missing. Our aim is to produce formalized identify main factors driving its plant species composition at continental scale. Location Atlantic Baltic coasts Europe, Black Sea region. Methods We compiled database 30,759 plots which were resampled reduce unbalanced sampling...
Abstract Questions The spread of alien plant species is one the main threats to biodiversity different natural habitats, and coastal dune habitats are among most affected. There a considerable local regional variation in level invasion on dunes. We asked what patterns across European dunes how they depend habitat types regions. Location Atlantic, Baltic, Black Sea Mediterranean coasts Europe. Methods used vegetation‐plot records from shifting stable grasslands extracted Vegetation Archive...
Blueback herring (Alosa aesti valis ) feeding in a visual “gulping” mode pref erentially swim toward the water surface at region just outside Snell’s window. Outside of window water’s reflects light from dark beneath fish. This background provides maximum contrast for zooplankters which reflect and refract entering through their own The principle is similar to that used field microscopy.
Summary 1. We studied the diet of invasive round goby ( Neogobius melanostomus ) on a diel basis in Flint River, warmwater stream Michigan, U.S.A. Diet and available prey samples were collected seven times over 24 h period four consecutive months. The section river lacked zebra mussels Dreissena polymorpha ), primary adult gobies elsewhere Great Lakes region. 2. changed with hydropsychid caddisfly chironomid larvae predominating during day, pupae dominating evening heptageniid mayflies at...
Most freshwater fishes have short pelagic early life stages. Lake Michigan presents an interesting scenario for yellow perch (Perca flavescens), a species with long larval stage that may not be well adapted to lakes expansive environment and extensive offshore transport. We investigated the possibility stages of were transported from their nearshore spawning grounds explored whether food resources more or less favorable offshore. To determine extent which age-0 moved offshore, we sampled at...
Studies of zooplankton feeding by juvenile blueback herring (Alosa aestivalis), an obligate planktivore, and bluegills (Lepomis macrochirus), a facultative indicate that they search markedly different methods. The searches as it swims, sighting most prey above its horizontal course, swims up to take the prey. bluegill while stopped (hovering). If is sighted, it, sucks in, then coasts stop resume searching. no short distance, stop, again. For uniform size (Artemia salina first instar nauplii)...