Filters: partyWithName: Allison Roy (X)
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The dwarf wedgemussel (Alasmidonta heterodon) is a federally endangered freshwater mussel that once ranged from New Brunswick to North Carolina, but now only exists in isolated populations throughout its diminished range. This study aimed to understand links between fish abundance and dwarf wedgemussel abundance and occurrence in the Connecticut and Delaware watersheds. Specifically, my study objectives were to 1) characterize fish assemblages near dwarf wedgemussel locations and unoccupied locations, 2) determine if dwarf wedgemussel occurrence and abundance are related to abundance of the known host fish species, tessellated darter and other potential host fish species per St. John White et. al. (2017). Two fish...
Data used to test a video monitoring and computational system for estimating juvenile fish abundance
We developed and tested neural network-based models to recognize and count emigrating juvenile river herring in continuous video. Continuous video was collected from an underwater camera installed at Great Herring Pond in Bourne, Massachusetts (USA) between June and November 2017. Our algorithm extracts video frames to assess presence/absence of fish and count numbers of fish emigrating. We used extracted video frames to assess model performance. Provided datasets include information about extracted frames that were used for model assessment. This data release includes four datasets that were used to test model performance and select the best fitting model. (1) The “Model Evaluation Dataset” includes count and presence/absence...
Categories: Data;
Tags: Ecology,
New England, Massachusetts, Cape Cod,
USGS Science Data Catalog (SDC),
biota
The Yellow Lampmussel (YLM), Lampsilis cariosa, is a medium-sized freshwater mussel occurring from Georgia, USA to Nova Scotia, Canada (>50% of global population within the Northeast Region). The species is declining throughout its range, is designated as vulnerable by the IUCN (Bogan & Woolnough 2017) and NatureServe (https://explorer.natureserve.org/) and is a Northeast Regional Species of Greatest Conservation Need. It is locally designated as endangered, threatened, or a special status in 6 states within the USFWS North Atlantic-Appalachian region (CT, DE, MA, ME, NJ, WV) and 3 additional states (GA, NC, SC) outside of the region, extirpated in NH, vulnerable to apparently secure in NY and PA, and unknown status...
There is growing evidence that headwater stream ecosystems are especially vulnerable to changing climate and land use, but managers are challenged by the need to address these threats at a landscape scale, often through coordination with multiple management agencies and landowners. This project sought to provide an example of cooperative landscape decision-making by addressing the conservation of headwater stream ecosystems in the face of climate change at the watershed scale. Predictive models were built for critical resources to examine the effects of the potential alternative actions on the objectives, taking account of climate effects and examining whether there are key uncertainties that impede decision making....
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2013,
CASC,
Completed,
Northeast,
Northeast CASC,
This data release consists of four datasets that were used for evaluating winter drawdown patterns in 166 Massachusetts lakes greater than 0.3 km2 surface area. The first dataset (“Water area and level.csv”) provides water area and water level time series data of 166 lakes from 2016 to 2021. Water area and water level time-series data were derived from European Space Agency’s Sentinel 1 synthetic aperture radar satellite sensor using the JavaScript code in Google Earth Engine platform. Details of this code were described in the software release (https://doi.org/10.5066/P9ZA5I1U). The second dataset (“Water area interpolated.csv”) is the linearly-interpolated daily water area time series data of the 166 lakes from...
Categories: Data;
Tags: Massachusetts,
USGS Science Data Catalog (SDC),
environment,
hydrology,
lake,
Headwater stream ecosystems are vulnerable to numerous threats associated with climate and land use change. In the northeastern US, many headwater stream species (e.g., brook trout and stream salamanders) are of special conservation concern and may be vulnerable to climate change influences, such as changes in stream temperature and streamflow. Federal land management agencies (e.g., US Fish and Wildlife Service, National Park Service, USDA Forest Service, Bureau of Land Management and Department of Defense) are required to adopt policies that respond to climate change and may have longer-term institutional support to enforce such policies compared to state, local, non-governmental, or private land managers. However,...
Categories: Publication;
Types: Citation;
Tags: Data Visualization & Tools,
Landscapes,
Northeast CASC,
Other Landscapes,
Rivers, Streams and Lakes,
Abstract (from American Fisheries Society): The timing of life history events in many plants and animals depends on the seasonal fluctuations of specific environmental conditions. Climate change is altering environmental regimes and disrupting natural cycles and patterns across communities. Anadromous fishes that migrate between marine and freshwater habitats to spawn are particularly sensitive to shifting environmental conditions and thus are vulnerable to the effects of climate change. However, for many anadromous fish species the specific environmental mechanisms driving migration and spawning patterns are not well understood. In this study, we investigated the upstream spawning migrations of river herring Alosa...
Categories: Publication;
Types: Citation
The dwarf wedgemussel (Alasmidonta heterodon) is a federally endangered freshwater mussel that once ranged from New Brunswick to North Carolina, but now only exists in isolated populations throughout its diminished range. Laboratory propagation in conjunction with augmentation or reintroduction is considered a critical component of dwarf wedgemussel restoration. The presented data aimed to I) develop in-vitro propagation techniques including methods to minimize microbial contamination for two Alasmidonta species and II) compile and assess critical fish assemblage information at existing dwarf wedgemussel presence and absence locations to inform future restoration activities. Results from this project will be used...
Aquatic ecosystems are among the most imperiled systems on the planet (e.g., Vorosmarty et al. 2010), and freshwater mussels represent a particularly threatened taxonomic group that exemplifies the challenges of assessing numerous rare, cryptic taxa. North America contains the greatest diversity of freshwater mussels globally, but nearly two-thirds of 300 currently recognized species are considered imperiled and 29 are likely extinct (Haag and Williams 2014). While national-level efforts have compiled portfolios of research and management actions to support freshwater mussel conservation (FMCS 2016; Ferreira-Rodriguez et al. 2019), managers urgently need robust frameworks for deciding how to allocate funding and...
Small, surface-release dams are ubiquitous across the U.S. and have the potential to alter stream flow, impede sediment and nutrient transport, and fragment biotic assemblages. To mitigate these and other ecological impacts and reduce public safety hazards, dam removal has become an increasingly prevalent method of stream restoration. However, few streams have been consistently monitored before and after dam removal, and there is a need for more information regarding how dam removals affect stream ecosystems across different dam, stream, and watershed characteristics. The presented data aimed to quantify the effects of dams and dam removals on two critical water quality parameters (stream temperature and dissolved...
Categories: Data;
Tags: USGS Science Data Catalog (SDC),
Water Quality,
dam removal,
freshwater ecosystems,
inlandWaters,
Many freshwater mussel species are critically imperiled, and propagation is essential for species‘ recovery. Fungal contamination can negatively affect in vitro propagation of freshwater mussels; thus, we investigated methods of mitigating fungal contamination. Specifically, we tested the effect of medium replacement frequency, antifungal (Amphotericin B) concentrations, and antifungal addition method on risk of fungal contamination and transformation success of two species, Alasmidtonta heterodon and congener, Alasmidonta undulata. We found that contamination risk was higher in treatment groups that were replenished with Amphotericin B every one or two days (vs. every three days), but contamination risk was not...
Categories: Data;
Tags: Massachusetts,
New England,
USGS-EMA-LOW-SB SMC: Freshwater mussels,
amphotericin B,
biota,
Small, surface-release dams can impair natural stream connectivity by disrupting the flow of water, sediment, nutrients, and biota. Many dams built during the 19th and 20th centuries have exceeded their functional lifespan, and as a result, dam removal has become an increasingly prevalent stream restoration method. However, many streams have not been consistently monitored before and after dam removal, and there is a paucity of information regarding how dam removals affect stream ecosystems across different dam, stream, and landscape characteristics. Therefore, this study aimed to quantify the effects of dams and dam removals on a critical water quality parameter (stream temperature) across 16 Massachusetts streams...
Categories: Data;
Tags: dam removal,
freshwater ecosystems,
inlandWaters,
water quality,
water temperature
River herring [collectively alewife (Alosa pseudoharengus) and blueback herring (Alosa aestivalis)] have been valued by human societies since pre-colonial times, but populations have undergone a dramatic coast-wide decline over the past five decades (ASMFC 2012, NFWF 2012). Declines in river herring have sparked a series of conservation and restoration measures, including dam removal, extensive moratoria on directed harvest, caps on bycatch (e.g., in the Atlantic herring fishery), designation as a species of concern both at Federal and State levels, and petitions for listing under the Endangered Species Act (ESA). The Northeast Association of Fish & Wildlife Agencies (NEAFWA) identified alewife and blueback herring...
Incorporating climate change into conservation and restoration decisions is increasingly important for natural resource managers and restoration practitioners. Dam removal is an example of a restoration tool that may offer multiple socio-economic and ecological benefits in urban streams and promote climate resilience. With the pace of dam removals increasing, practitioners and researchers are well-poised to incorporate climate change into future dam removal decisions. Therefore, we surveyed dam removal practitioners across 14 states in the eastern United States to understand current practices of dam removals, factors driving restoration decisions, and how climate change knowledge is incorporated into these decisions....
LakeLevel Tracker’s user interface: Key features The application’s freely available interface guides users through a straightforward process to generate data and simple figures. Users can access the GEE web application at this link (https:// tinyurl.com/musexpyw), navigate to a lake and specify a date range to generate surface water area and water level charts (Figure 1). Users can visualize changes in surface water area and water level over seasons or years and download the data for further analysis. More information on how to use this web application with step-by-step instructions can be found at this link (https://tinyurl.com/yxnernxv).
Categories: Publication;
Types: Citation
Aquatic ecosystems provide habitat and migration corridors to a myriad of species, including plants, fishes, amphibians, birds, mammals, and insects. These ecosystems typically contain relatively higher biodiversity than their terrestrial counterparts; yet, aquatic biodiversity loss in North America is occurring at a rate five times faster than in terrestrial ecosystems. One of the major causes of this accelerated biodiversity loss is climate change. In the last two decades, states in the Northeastern U.S. have developed management plans for protecting aquatic biodiversity. Recent plans consider the general impacts from climate change and include the protection of several habitat types which should promote biodiversity...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2021,
CASC,
Landscapes,
Landscapes,
Northeast,
Abstract (from MDPI): Artificial manipulation of lake water levels through practices like winter water-level drawdown (WD) is prevalent across many regions, but the spatiotemporal patterns are not well documented due to limited in situ monitoring. Multi-sensor satellite remote sensing provides an opportunity to map and analyze drawdown frequency and metrics (timing, magnitude, duration) at broad scales. This study developed a cloud computing framework to process time series of synthetic aperture radar (Sentinel 1-SAR) and optical sensor (Landsat 8, Sentinel 2) data to characterize WD in 166 lakes across Massachusetts, USA, during 2016–2021. Comparisons with in situ logger data showed that the Sentinel 1-derived...
Categories: Publication;
Types: Citation
Abstract (from PLoSOne): Small surface-release dams are prevalent across North American watersheds and can alter stream flow, thermal regimes, nutrient dynamics, and sediment transport. These dams are often implicated as a cause of negative water quality impacts—including reduced dissolved oxygen (DO)—and dam removal is increasingly employed to restore natural stream processes and improve DO. Published impacts of small dams on DO vary widely across sites, and even less is known about the extent and timescale of DO recovery following removal. Therefore, we sought to quantify the effects of small dams and dam removal on DO and determine the dam, stream, and watershed characteristics driving inter-site variation in...
Categories: Publication;
Types: Citation
This data release consists of four datasets which were used for evaluating winter drawdown (WD) lakes to follow the Massachusetts general WD guidelines. The first dataset ("Water level observations.csv") provides water level monitoring data of 21 (18 WD and 3 non-WD) recreational lakes in Massachusetts from 2014 to 2018. The water levels were measured by paired nonvented pressure transducers (HOBO U20L-01) and processed by ContDataQC package to remove potential inaccurate observations. For better comparison between lakes, the water level was relativized to each lake's normal pool level. This dataset was used for understanding the hydrology of WD and non-WD lakes and validating the hydrological model that we developed...
Categories: Data;
Tags: Massachusetts,
USGS Science Data Catalog (SDC),
environment,
hydrology,
lake,
A repository of hydrological modeling framework for lake drawdown management (HMF-Lake). We have developed a hydrological modeling framework which can simulate water level variations response to different weather conditions and operation rules.
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