M. Armbruster results 9
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Territorial and occupancy behavior of black sea bass on oyster aquaculture gear and boulder habitatOA Marine
Observations of fish behavior can provide insights into habitat preferences and use. Black sea bass, Centropristis striata , are a territorial temperate reef finfish species known for their high commercial and recreational value and association with structured habitat. We used underwater action cameras to record video of black sea bass to assess territorial (agonistic, ambush, displacement) and occupancy (station-keeping) beha...
Global gradients in intraspecific variation in vegetative and floral traits are partially associated with climate and species richnessNARA Subscribed
Aim Intraspecific trait variation (ITV) within natural plant communities can be large, influencing local ecological processes and dynamics. Here, we shed light on how ITV in vegetative and floral traits responds to large‐scale abiotic and biotic gradients (i.e., climate and species richness). Specifically, we tested whether associations of ITV with temperature, precipitation and species richness were consistent with any of fou...
Can members of the south‐western Gila robusta species complex be distinguished by morphological features?NARA Subscribed
The goal for this project was to re‐examine key morphological characters hypothesized to differentiate Gila intermedia , Gila robusta and Gila nigra and outline methods better suited for making species designations based on morphology. Using a combination of meristic counts, morphological measurements and geometric morphometrics, morphological dissimilarities were quantified among these three putative species. Traditional meri...
Disjunct populations of E uropean vascular plant species keep the same climatic nichesNARA Subscribed
Aim Previous research on how climatic niches vary across species ranges has focused on a limited number of species, mostly invasive, and has not, to date, been very conclusive. Here we assess the degree of niche conservatism between distant populations of native alpine plant species that have been separated for thousands of years. Location European A lps and F ennoscandia. Methods Of the studied pool of 888 terrestrial vascula...
Nitrogen input together with ecosystem nitrogen enrichment predict nitrate leaching from European forestsNARA Subscribed
The IFEF database (Indicators of Forest Ecosystem Functioning), consisting of nitrogen deposition, nitrate leaching fluxes, and soil and ecosystem characteristics, is analysed to evaluate the C/N ratio in the organic horizon as an indicator of nitrate leaching. One hundred and eighty one forests are examined, from countries across Europe ranging from boreal to Mediterranean regions, encompassing broadleaf and coniferous sites...
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