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Articles 1 - 8 of 8
Full-Text Articles in Physical Sciences and Mathematics
North American Breeding Bird Survey Underestimates Regional Bird Richness Compared To Breeding Bird Atlases, Roi Ankori-Karlinsky, Michael Kalyuzhny, Katherine F. Barnes, Andrew M. Wilson, Curtis Flather, Rosalind Renfrew, Joan Walsh, Edna Guk, Ronen Kadmon
North American Breeding Bird Survey Underestimates Regional Bird Richness Compared To Breeding Bird Atlases, Roi Ankori-Karlinsky, Michael Kalyuzhny, Katherine F. Barnes, Andrew M. Wilson, Curtis Flather, Rosalind Renfrew, Joan Walsh, Edna Guk, Ronen Kadmon
Environmental Studies Faculty Publications
Standardized data on large-scale and long-term patterns of species richness are critical for understanding the consequences of natural and anthropogenic changes in the environment. The North American Breeding Bird Survey (BBS) is one of the largest and most widely used sources of such data, but so far, little is known about the degree to which BBS data provide accurate estimates of regional richness. Here, we test this question by comparing estimates of regional richness based on BBS data with spatially and temporally matched estimates based on state Breeding Bird Atlases (BBA). We expected that estimates based on BBA data would …
Estimating The Creation And Removal Date Of Fracking Ponds Using Trend Analysis Of Landsat Imagery, Rutherford V. Platt, David Manthos, John Amos
Estimating The Creation And Removal Date Of Fracking Ponds Using Trend Analysis Of Landsat Imagery, Rutherford V. Platt, David Manthos, John Amos
Environmental Studies Faculty Publications
Hydraulic fracturing, or fracking, is a process of introducing liquid at high pressure to create fractures in shale rock formations, thus releasing natural gas. Flowback and produced water from fracking operations is typically stored in temporary open-air earthen impoundments, or frack ponds. Unfortunately, in the United States there is no public record of the location of impoundments, or the dates that impoundments are created or removed. In this study we use a dataset of drilling-related impoundments in Pennsylvania identified through the FrackFinder project led by SkyTruth, an environmental non-profit. For each impoundment location, we compiled all low cloud Landsat imagery …
Spatial Models To Account For Variation In Observer Effort In Bird Atlases, Andrew M. Wilson, Daniel W. Brauning, Caitlin Carey, Robert S. Mulvihill
Spatial Models To Account For Variation In Observer Effort In Bird Atlases, Andrew M. Wilson, Daniel W. Brauning, Caitlin Carey, Robert S. Mulvihill
Environmental Studies Faculty Publications
To assess the importance of variation in observer effort between and within bird atlas projects and demonstrate the use of relatively simple conditional autoregressive (CAR) models for analyzing grid-based atlas data with varying effort. Pennsylvania and West Virginia, United States of America. We used varying proportions of randomly selected training data to assess whether variations in observer effort can be accounted for using CAR models and whether such models would still be useful for atlases with incomplete data. We then evaluated whether the application of these models influenced our assessment of distribution change between two atlas projects separated by twenty …
The Feasibility Of Counting Songbirds Using Unmanned Aerial Vehicles, Andrew M. Wilson, Janine M. Barr, Megan E. Zagorski
The Feasibility Of Counting Songbirds Using Unmanned Aerial Vehicles, Andrew M. Wilson, Janine M. Barr, Megan E. Zagorski
Environmental Studies Faculty Publications
Obtaining unbiased survey data for vocal bird species is inherently challenging due to observer biases, habitat coverage biases, and logistical constraints. We propose that combining bioacoustic monitoring with unmanned aerial vehicle (UAV) technology could reduce some of these biases and allow bird surveys to be conducted in less accessible areas. We tested the feasibility of the UAV approach to songbird surveys using a low-cost quadcopter with a simple, lightweight recorder suspended 8 m below the vehicle. In a field experiment using playback of bird recordings, we found that small variations in UAV altitude (it hovered at 28, 48, and 68 …
Seismic Surveys And Marine Turtles: An Underestimated Global Threat?, Sarah E. Nelms, Wendy Dow Piniak, Caroline R. Weir, Brendan J. Godley
Seismic Surveys And Marine Turtles: An Underestimated Global Threat?, Sarah E. Nelms, Wendy Dow Piniak, Caroline R. Weir, Brendan J. Godley
Environmental Studies Faculty Publications
Seismic surveys are widely used in marine geophysical oil and gas exploration, employing airguns to produce sound-waves capable of penetrating the sea floor. In recent years, concerns have been raised over the biological impacts of this activity, particularly for marine mammals. While exploration occurs in the waters of at least fifty countries where marine turtles are present, the degree of threat posed by seismic surveys is almost entirely unknown. To investigate this issue, a mixed-methods approach involving a systematic review, policy comparison and stakeholder analysis was employed and recommendations for future research were identified. This study found that turtles have …
Eco-Nostalgia In Popular Turkish Cinema, Ekin Gündüz Özdemirci, Salma Monani
Eco-Nostalgia In Popular Turkish Cinema, Ekin Gündüz Özdemirci, Salma Monani
Environmental Studies Faculty Publications
Book Summary: Ecomedia: Key Issues is a comprehensive textbook introducing the burgeoning field of ecomedia studies to provide an overview of the interface between environmental issues and the media globally. Linking the world of media production, distribution, and consumption to environmental understandings, the book addresses ecological meanings encoded in media texts, the environmental impacts of media production, and the relationships between media and cultural perceptions of the environment. [From the publisher]
Recruitment Facilitation And Spatial Pattern Formation In Soft-Bottom Mussel Beds, John A. Commito, Ann E. Commito, Rutherford V. Platt, Benjamin M. Grupe, Wendy Dow Piniak, Natasha J. Gownaris, Kyle A. Reeves, Allison M. Vissichelli
Recruitment Facilitation And Spatial Pattern Formation In Soft-Bottom Mussel Beds, John A. Commito, Ann E. Commito, Rutherford V. Platt, Benjamin M. Grupe, Wendy Dow Piniak, Natasha J. Gownaris, Kyle A. Reeves, Allison M. Vissichelli
Environmental Studies Faculty Publications
Mussels (Mytilus edulis) build massive, spatially complex, biogenic structures that alter the biotic and abiotic environment and provide a variety of ecosystem services. Unlike rocky shores, where mussels can attach to the primary substrate, soft sediments are unsuitable for mussel attachment. We used a simple lattice model, field sampling, and field and laboratory experiments to examine facilitation of recruitment (i.e., preferential larval, juvenile, and adult attachment to mussel biogenic structure) and its role in the development of power-law spatial patterns observed in Maine, USA, soft-bottom mussel beds. The model demonstrated that recruitment facilitation produces power-law spatial structure similar …
Radiocarbon Date List X: Baffin Bay, Baffin Island, Iceland, Labrador Sea, And The Northern North Atlantic, J.T. Andrews, J.P. Briner, D.C. Barber, I.S. Castaneda, T.A. Cooper, G. Dunhill, S. Hagen, M. Hald, F.R. Hall, E. James, A.E. Jennings, N. Koc, G.B Kristjansdottir, Sarah M. Principato, L.M. Smith, T. Vorren, N. Weiner, K. Williams
Radiocarbon Date List X: Baffin Bay, Baffin Island, Iceland, Labrador Sea, And The Northern North Atlantic, J.T. Andrews, J.P. Briner, D.C. Barber, I.S. Castaneda, T.A. Cooper, G. Dunhill, S. Hagen, M. Hald, F.R. Hall, E. James, A.E. Jennings, N. Koc, G.B Kristjansdottir, Sarah M. Principato, L.M. Smith, T. Vorren, N. Weiner, K. Williams
Environmental Studies Faculty Publications
Date List X contains an annotated listing of 213 radiocarbon dates determined on samples from marine and terrestrial environments. The marine samples were collected from the East Greenland, Iceland, Spitzbergen, and Norwegian margins, Baffin Bay, and Labrador Sea. The terrestrial samples were collected from Vestfirdir, Iceland and Baffin Island. The samples were submitted by INSTAAR and researchers affiliated with INSTAAR's Micropaleontology Laboratory under the direction of Dr.’s John T. Andrews and Anne E. Jennings. All of the dates from marine sediment cores were determined from either shells or foraminifera (both benthic and planktic). All dates were obtained by the Accelerator …