Entity

Time filter

Source Type

Annapolis, MD, United States

Largemouth Bass (Micropterus salmoides) is a common predator and popular sport fish in tidal freshwater streams and lakes of North America. Tidal freshwater streams of Chesapeake Bay watershed, the largest estuary of the United States, differ remarkably in availability of submerged aquatic vegetation (SAV) and suitability for spawning habitat for M. salmoides. After scoring nursery habitat attributes of size and habitat quality, I combined scores to form indices for 141 nursery habitats of the Chesapeake Bay watershed. Average index for nursery habitat quality was positively related to the relative abundance of juvenile M. salmoides. For two important coastal fisheries for M. salmoides, over half of highly indexed nursery habitats were expected to be negatively impacted by projected sea level rise (SLR). Innovative strategies aimed at conserving populations of M. salmoides may include identifying habitats vulnerable to such long-term habitat changes and either protecting important habitats or managing future expectations for these populations. © 2015, American Midland Naturalist. Source


Keisman J.,University of Cambridge | Shenk G.,Annapolis flyer cab
Journal of the American Water Resources Association | Year: 2013

Applications of Total Maximum Daily Load (TMDL) criteria for complex estuarine systems like Chesapeake Bay have been limited by difficulties in estimating precisely how changes in input loads will impact ambient water quality. A method to deal with this limitation combines the strengths of the Chesapeake Bay's Water Quality Sediment Transport Model (WQSTM), which simulates load response, and the Chesapeake Bay Program's robust historical monitoring dataset. The method uses linear regression to apply simulated relative load responses to historical observations of water quality at a given location and time. Steps to optimize the application of regression analysis were to: (1) determine the best temporal and spatial scale for applying the WQSTM scenarios, (2) determine whether the WQSTM method remained valid with significant perturbation from calibration conditions, and (3) evaluate the need for log transformation of both dissolved oxygen (DO) and chlorophyll a (CHL) datasets. The final method used simple linear regression at the single month, single WQSTM grid cell scale to quantify changes in DO and CHL resulting from simulated load reduction scenarios. The resulting linear equations were applied to historical monitoring data to produce a set of "scenario-modified" DO or CHL concentration estimates. The utility of the regression method was validated by its ability to estimate progressively increasing attainment in support of the 2010 Chesapeake Bay TMDL. © 2013 American Water Resources Association. Source


Farrugia A.,Annapolis flyer cab | Farrugia A.,University of Western Australia
Transfusion Medicine Reviews | Year: 2010

Plasma protein therapies have been sheltered historically from the scrutiny of evidence-based medicine. Thus, a number of albumin solutions became part of the established therapeutic armamentarium with a very modest evidence base. As evidence-based medicine has turned its focus on plasma protein therapies, albumin's appropriate use has become increasingly questioned. Concurrently, interest in other colloid plasma expanders has increased as efforts to address their side-effects have resulted in new products. The decade-old meta-analysis from the Cochrane collaboration linking albumin with increased mortality, although currently disproven, has resulted in ongoing scrutiny of albumin's safety and has led to a large randomized clinical trial which, while demonstrating equivalent safety with saline, has also shown equivalent mortality in the patient population assessed. Albumin's manufacture yields products which vary between different brands, as well as occasionally between batches from the same brand. These changes affect albumin's physiologic properties and may contribute to the different therapeutic effects observed in clinical practice. More clinical investigations of albumin's therapeutic role are needed before its unique biological features can be shown to result in therapeutically useful drugs. © 2010 Elsevier Inc. All rights reserved. Source


Love J.W.,Annapolis flyer cab
Transactions of the American Fisheries Society | Year: 2011

The largemouth bass Micropterus salmoides is arguably the most sought fish species by inland anglers in North America. The suitability of inland habitats for supporting largemouth bass populations can differ remarkably but is difficult to quantify. I developed and evaluated the utility of a habitat suitability index (HSI) for largemouth bass in tidal freshwater portions of selected drainages in the Chesapeake Bay. The HSI comprised suitability scores ranging from 0 (not suitable) to 1 (perfectly suitable) and was calculated from seven separate suitability models in which suitability scores were functions of summer water temperature (?C), summer dissolved oxygen (mg/L), summer pH, maximum monthly salinity (‰), submerged aquatic vegetation coverage (%), monthly average water clarity, and stream discharge (m3/s) during the spawning season. Some of the suitability models that contributed to the HSI were modified to reflect species-habitat relationships observed for largemouth bass in drainages of the Chesapeake Bay from 2003 to 2008. Based on the HSI, drainages ranged from moderately suitable (HSI = 0.57) to highly suitable (HSI=0.84). Spatial andmonthly differences in HSI were positively correlated with relative abundance of largemouth bass; similar habitat conditions among years led to low interannual variation in HSI, which was not correlated with annual differences in relative abundance. Although the HSI may be useful in summarizing habitat suitability for a species, it may obscure important physical and biotic interactions that could affect the species' distribution. © American Fisheries Society 2011. Source


Lukas L.,Lehigh Valley Health Network | Lukas L.,Annapolis flyer cab | Foltz C.,Lehigh Valley Health Network | Paxton H.,Lehigh Valley Health Network
Journal of Palliative Medicine | Year: 2013

Background: There is a growing need for palliative care services located outside of hospitals. Objective: This study's objective was to evaluate a home-based, nonhospice, palliative medicine (PM) consultation practice within a fee-for-service environment. Method: Hospital and emergency department (ED) utilization and cost data obtained from administrative records were analyzed with longitudinal analyses to compare use 18 months before and after service enrollment in a single patient group. Participants: Patients (N=369) with advanced complex illness (ACI) referred for home-based palliative consultation participated in the study. Intervention: Consultation conducted by nurse practitioners included a multidimensional assessment with recommendations to outpatient physicians for symptom management and guidance to patient and family for goals of treatment and advanced care planning (ACP). Nurse practitioners were supported by a collaborating PM physician. Follow-up visits varied by need for symptom management and ACP. Results: Total hospitalizations, total hospital days, total and variable costs, and probability of a 30-day readmission were significantly reduced in the 18-month period following program enrollment. However, probability of an ED visit was not reduced. Conclusions: While requiring replication with rigorous methods, preliminary results suggest a home-based PM practice may reduce hospital utilization for ACI patients. © Mary Ann Liebert, Inc. Source

Discover hidden collaborations