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Filter Total Items: 171140

A structured decision-making framework for managing cyanobacterial harmful algal blooms in New York State parks

Cyanobacteria are increasingly a global water-quality concern because of the potential for these organisms to develop into potentially harmful blooms that affect ecological, economic, and public health. Cyanobacterial harmful algal blooms (CyanoHABs) can lead to a decrease in water quality and affect many of the recreational and ecological benefits of parks that include lakes. The New York State O
Authors
Jennifer L. Graham, Gabriella M. Cebada Mora, Rebecca M. Gorney, Lianne C. Ball, Claudia Mengelt, Michael C. Runge

Miocene terrestrial paleoclimates inferred from pollen in the Monterey Formation, Naples Coastal Bluffs section, California

We present here a comprehensive record of Miocene terrestrial ecosystems from exposures of the Monterey Formation along the Naples coastal bluffs, west of Santa Barbara, California. Constrained by an updated chronology, pollen analyses of 28 samples deposited between 18 and 6 Ma reflect the demise of mesophytic taxa that grew in a warm, wet environment during the late early and early middle Miocen
Authors
Linda E. Heusser, John A. Barron, Gregg Blake, Jon Nichols

Sediment thickness and ground motion site amplification along the United States Atlantic and Gulf Coastal Plains

Past and present research on earthquake ground motions along the Atlantic and Gulf Coastal Plains and Mississippi Embayment show significant period-dependent site response that is not presently accounted for in ground motion models. These deviations are strongly correlated with the thickness of Mesozoic and younger syn- and post-rift sediments. With the recent incorporation of deep basin depth mea
Authors
Oliver S. Boyd, David Henry Churchwell, Morgan P. Moschetti, Eric M. Thompson, Thomas L. Pratt, Martin C. Chapman, Sanaz Rezaeian

Using in situ/ex situ research collaborations to support polar bear conservation

A warming Arctic threatens the long-term persistence of polar bears (Ursus maritimus) in the wild. Historically, little collaboration existed between the in situ and ex situ polar bear scientific communities. However, for the past decade, zoo professionals, government agencies, and non-governmental organizations (NGO’s) have partnered to leverage resources and expertise with the goal of addressing
Authors
Randi Meyerson, Todd C. Atwood

Egg retention in wild-caught Python bivittatus in the Greater Everglades Ecosystem, Florida, USA

Retention of eggs in oviducts beyond the normal oviposition period is a common problem for captive reptiles, but the occurrence of egg retention in wild populations is largely unknown. The Burmese python (Python [molurus] bivittatus; Kühl 1820) is an oviparous snake native to south-eastern Asia that is now established in southern Florida. From 2011–2019, invasive Burmese pythons were opportunistic
Authors
Gretchen Erika Anderson, Frank N. Ridgley, Jillian Maureen Josimovich, Robert Reed, Bryan G. Falk, Amy A. Yackel Adams, Andrea Faye Currylow

Modelagem de qualidade da agua: Aplicação do SPARROW

No abstract available.
Authors
Flavio Hadler Tröger, Sérgio Rodrigues Ayrimoraes Soares, Diana Leite Cavalcanti, Marcelo Luiz de Souza, Daniel Edmund Restivo, Olivia L. Miller

Southeast Utah Group climate and drought adaptation report: Exposure and perennial grass sensitivity

National Park Service (NPS) managers face growing challenges resulting from the effects of climate change. In particular, as temperatures rise in coming decades, natural resource management in the western United States must cope with expectations for elevated severity and frequency of droughts. These challenges are particularly pronounced for vegetation managers in dryland environments. Developing
Authors
John B. Bradford, Caroline Havrilla, Jessica A. Hartsell, Daniel Rodolphe Schlaepfer, Molly L. McCormick, Seth M. Munson, Charles Yackulic, Terry T Fisk, David Thoma, Dusty Perkins, Dana L. Witwicki, Matt VanScoyoc, Michael C. Duniway, Sasha C. Reed

Medium-fidelity CFD modeling of multicopter wakes for airborne sensor measurements

No abstract available.
Authors
Jonathan Chiew, Michael Aftosmis, Kristen L. Manies

The importance of phenology and thermal exposure to early life history success of nonnative Smallmouth Bass in the Yellowstone River

Knowledge of potential spread by introduced species is critical to effective management and conservation. The Smallmouth Bass Micropterus dolomieu is an example of a fish that has been introduced globally, often spreads after introduction, and has substantial predatory impacts on fish assemblages. Nonnative Smallmouth Bass in the free-flowing Yellowstone River, Montana, have expanded from warmer,
Authors
Nicholas S. Voss, Robert K. Al-Chokhachy, Adam Sepulveda, Christine E. Verhille, Michael P. Ruggles, Alexander V. Zale

GeoAI and the future of spatial analytics

This chapter discusses the challenges of traditional spatial analytical methods in their limited capacity to handle big and messy data, as well as mining unknown or latent patterns. It then introduces a new form of spatial analytics—geospatial artificial intelligence (GeoAI)—and describes the advantages of this new strategy in big data analytics and data-driven discovery. Finally, a convergent spa
Authors
Wenwen Li, Samantha Arundel

Continental shelves as detrital mixers: U-Pb and Lu-Hf detrital zircon provenance of the Pleistocene–Holocene Bering Sea and its margins

Continental shelves serve as critical transfer zones in sediment-routing systems, linking the terrestrial erosional and deep-water depositional domains. The degree to which clastic sediment is mixed and homogenized during transfer across broad shelves has important implications for understanding deep-sea detrital records. Wide continental shelves are thought to act as capacitors characterized by t
Authors
Matthew A. Malkowski, Samuel Johnstone, Glenn R. Sharman, Colin J. White, Daniel Scheirer, Ginger Barth

The ice don’t lie

No abstract available.
Authors
Todd C. Atwood