Mercury increase in Lake Champlain fish: links to fishery dynamics and extreme climatic events.

Mercury concentrations in Lake Champlain fish increased (2011-2017) for the first time in more than two decades. The increase, however, was not consistent among species or throughout the lake. Mercury concentrations in smallmouth bass and yellow perch from the three Main Lake segments increased significantly while concentrations in the eastern portions of the lake (Northeast Arm and Malletts Bay) remained unchanged or decreased; mercury concentrations in white perch remained unchanged. Factors examined to explain the increase included: atmospheric deposition, lake temperature, chlorophyll-a, fishery dynamics, lake flooding and loading of total suspended solids (TSS). This paper examines how each factor has changed between study periods and the spatial variability associated with the change. We hypothesize fishery dynamics, flooding and TSS loading may be partially responsible for the increase in fish mercury. Both growth efficiency and biomass of fish suggest mercury concentrations would increase in the Main Lake segments and decrease in the eastern portion of the lake. Additionally, two extreme climate events in 2011 resulted in extensive flooding and a four-fold increase in annual TSS loading, both potentially increasing biotic mercury with the impact varying spatially throughout the lake. Changes to the fishery and disturbance caused by extreme climatic events have increased biotic mercury and the processes responsible need further study to identify possible future scenarios in order to better protect human and wildlife health.

Long-term dataset on aquatic responses to concurrent climate change and recovery from acidification.

Concurrent regional and global environmental changes are affecting freshwater ecosystems. Decadal-scale data on lake ecosystems that can describe processes affected by these changes are important as multiple stressors often interact to alter the trajectory of key ecological phenomena in complex ways. Due to the practical challenges associated with long-term data collections, the majority of existing long-term data sets focus on only a small number of lakes or few response variables. Here we present physical, chemical, and biological data from 28 lakes in the Adirondack Mountains of northern New York State. These data span the period from 1994-2012 and harmonize multiple open and as-yet unpublished data sources. The dataset creation is reproducible and transparent; R code and all original files used to create the dataset are provided in an appendix. This dataset will be useful for examining ecological change in lakes undergoing multiple stressors.

[Borderline personality disorder associated with psychotic symptoms and parietal lobe abnormalities]. / Borderlinepersönlichkeitsstörung mit psychotischen Symptomen und Parietallappenstörungen.

OBJECTIVE: We explore a case of a forensic patient with severe personality disorder, borderline type, and additional psychotic symptoms. Furthermore, she showed parietal lobe abnormalities. METHOD: We describe a case report and the relevant theoretical deliberations. CONCLUSIONS: Attempts to categorize patients with severe borderline personality disorder and psychotic symptoms have been made since the beginning of the 20th century. We show that in our patient neuroimaging such as SPECT scan can prove parietal lobe abnormalities. We describe possible links between these findings and her symptoms.

Quality of life for patients with a personality disorder comparison of patients in two settings: an English special hospital and a Dutch TBS clinic.

INTRODUCTION: There are differing approaches to the management of people with a severe personality disorder in the UK and The Netherlands. Few comparative studies exist. This study describes the use of an adapted version of the Lancashire Quality of life profile as a patient based-outcome measure. METHOD: A cross-sectional sample of 37 patients was interviewed at each site. RESULT: Patients in the Dutch service reported a significantly higher quality of life which could not be explained by better objective circumstances. DISCUSSION: The data collected do not explain why the Dutch patients reported a higher quality of life. It is suggested that this finding was related to more extensive therapeutic activity and greater therapeutic optimism in the Dutch service. There is a need for critical scrutiny of the appropriateness of quality of life measures in offender patients before they are accepted for use as an outcome measure.