Results 141 to 150 of about 79,904 (348)
Impact of different farming systems on epigeic beneficial arthropods and earthworm fauna in arable crops [PDF]
, 2004 In dieser Arbeit wurden die Auswirkungen unterschiedlicher traditioneller (konventionell, integriert) und biologischer (organisch-biologisch, bio-dynamisch) Anbausysteme auf die epigäischen Nutzarthropoden und die Regenwurmfauna untersucht.
Pfiffner, Lukas
core
Density estimates of monarch butterflies overwintering in central Mexico
PeerJ, 2017 Given the rapid population decline and recent petition for listing of the monarch butterfly (Danaus plexippus L.) under the Endangered Species Act, an accurate estimate of the Eastern, migratory population size is needed.
W. Thogmartin +8 more
semanticscholar +1 more source
Search and Passage Are Decoupled for Migrating Trout Kelts at Multi‐Exit Dam
River Research and Applications, EarlyView.ABSTRACT Longitudinal and lateral river connectivity have been drastically reduced over time, with hydropower development as a major driver of fragmentation. While fishways are widely implemented to support upstream migration, downstream passage remains a major challenge.
Halvor Kjærås +5 more
wiley +1 more source
European Journal of Entomology, 2018 This study reports seasonal presence of Coccinella septempunctata L. (Coleoptera: Coccinellidae) in Southeast Turkey, in 2008, 2009 and 2010. Samples were collected from crops in agricultural areas at altitudes of 10 m, 800 m and 1400 m from stands of ...
Ali ÖZPINAR +2 more
doaj +1 more source
Temporal and spatial changes in milfoil distribution and biomass associated with weevils in Fish Lake, WI [PDF]
, 2000 During the course of an eight year monitoring effort, the Wisconsin Department of Natural Resources documented a significant decline in milfoil biomass and distribution in Fish Lake, Wisconsin. Average milfoil biomass declined by 40- 50% from 374-524
Bozek, Michael A. +3 more
core
Overwintering van zwartvruchtrot
, 2007 Zwartvruchtrot wordt veroorzaakt door de schimmel Stemphylium vesicarium. De geslachtelijke vorm is Pleospora allii. De schade die de ziekte kan veroorzaken is groot. Dit heeft tot gevolg dat de telers veel spuiten omdat ze hun gewas ziektevrij willen houden.
de Jong, P.F., Heijne, B.
openaire +1 more source
Accounting for animal movement during aerial imaging surveys
Remote Sensing in Ecology and Conservation, EarlyView.Animals are not stationary during aerial surveys; if their movements are related to the movement of the aerial platform, then bias can be introduced into subsequent population count estimates. We sought to establish a framework for assessing the impacts of animal movement on count error and platform bias by comparing aggregated counts and relative ...
Rowan L. Converse +5 more
wiley +1 more source
European Journal of Entomology, 2003 Previous work suggests that submergence of Lycaena dispar larvae during overwintering may play a significant role in this butterfly's population dynamics. Since potential re-introduction sites in eastern England are prone to regular seasonal flooding, we
Colin N. NICHOLLS, Andrew S. PULLIN
doaj +1 more source
Distribution and Status of the Brazilian Free-tailed Bat (Tadarida brasiliensis cynocephala) in Arkansas [PDF]
, 1988 Investigations of building infestations, mist netting activities, and specimens submitted to the Arkansas Department of Health document the Brazilian free-tailed bat to be found in 14 Arkansas counties.
England, Daniel R. +5 more
core +2 more sources
Annual survival in a dynamic species: pronghorn survival patterns across their northern range
Wildlife Biology, EarlyView.Quantifying variation in demographic patterns, such as survival and recruitment, is critical for understanding population dynamics and informing evidence‐based and adaptive wildlife management. In this study, we leverage an extensive dataset from over 1000 GPS collared pronghorn Antilocapra americana to provide the first large‐scale evaluation of ...
Molly C. McDevitt +5 more
wiley +1 more source