Understanding the Role of Phosphorus in Lakes

We believe it is important to regard the lake proper as two separate habitats, the offshore and the coastal zone. Over the last 15 years conditions along the coastal zone in Conesus Lake have deteriorated significantly, following a trend that has been documented in the Great Lakes and other Finger Lakes after the invasion of zebra mussels. Meanwhile the offshore zone has remained mildly eutrophic over the last 25 years (high in nutrients and algal biomass). While this is an undesirable state in terms of water quality, monitoring data provides no indication that the offshore system is becoming increasingly eutrophic

Management Approaches for the Control of Aquatic Plants

This guide is designed to provide information on the ecological values and problems associated with aquatic macrophytes, to present methods used to control the troublesome species, and to provide suggestions on how to implement a lake management plan that would deal with macrophytes as legally and as safely as possible

Continued Monitoring of Macrophyte Biomass and Filamentous Algal Cover in Conesus Lake Summer 2009

This study continues a long-term program designed to monitor trends in growth of macrophyte beds and filamentous algae along the shoreline of Conesus Lake. The program was initiated as part of the U.S.D.A. watershed project and is now sustained with the support of Livingston County. We now have an extensive and valuable ten-year record of plant biomass and distribution that can be used to assess natural changes in the Conesus Lake ecosystem and to evaluate the efficacy of management practices that target nuisance plant growth. The results of the 2009 monitoring study reported here provide more evidence on the potential changes in plant growth at North Gully Cove brought about by the rechanneling of North Gully creek. Because our study sites are a subset of those included in the U.S.D.A. project, the present study also contributes to the long-term database of macrophyte and filamentous algal growth along the shoreline in Conesus Lake

Studies of Adult and Larval Zebra Mussel Populations in Conesus Lake, NY

The goal of this study was to assess the status of the zebra mussel population (Family Dreissinidae, species Dreissena polymorpha) in Conesus Lake by sampling benthic adults and planktonic larvae during the summer reproductive season. Another invasive dreissinid bivalve, the quagga mussel, D. bugensis, has firmly established itself in some of the larger Finger Lakes, including Seneca and Canandaigua Lake. Therefore a second goal of this study was to determine if quagga mussels had invaded Conesus Lake. In this report we provide data on population numbers and size distribution of adult zebra mussels and describe temporal patterns of larval density and cohort development. Water quality data for are also provided for a deep-water station where larvae were sampled. Our observations indicate that, while populations of adult mussels have declined by about 20% since the year 2000, adult densities and the supply of larvae are still moderately high and the species seems to be well established in Conesus Lake

Soil and Nutrient Loss from Selected Subwatersheds of Conesus Lake

The purpose of this study was to evaluate the loss of soil and nutrients from the upland area of ten selected small watersheds or subwatersheds surrounding Conesus Lake. Macrophyte beds of mixed composition exist around the entire edge of Conesus Lake – perimeter beds. In addition, macrophyte beds consisting mainly of Eurasian milfoil exist at or near many of the creek mouths within the littoral zone of Conesus Lake. These creek-mouth associated beds are of interest because their presence may be associated with creeks that lose a large amount of nutrients and soils from their subwatershed

Water Chemistry of the North and South Basins of Conesus Lake

The objective of this study was to determine if there were differences in the chemistry of the north and south basins of Conesus Lake during the summer stratification period. To achieve this objective, water samples were taken from 18 May to 2 November 2000 from both basins

Tissue microarrays analysis in chondrosarcomas: light microscopy, immunohistochemistry and xenograft study

<p>Abstract</p> <p>Background</p> <p>Chondrosarcoma (Chs) is the third most frequent primary malignant tumour of bone and can be primary or secondary, the latter results mainly from the malignant transformation of a benign pre-existing tumour.</p> <p>Methods</p> <p>All the cases diagnosed as Chs (primary tumours, recurrences and/or metastasis and xenotransplanted Chs) from the files of our Department were collected. Only cases with paraffin blocks available were selected (Total 32 cases). Six Tissue Microarrays (TMAs) were performed and all the cases and biopsies were distributed into the following groups: a) only paraffin block available from primary and/or metastatic tumours (3 TMAs), b) paraffin block available from primary and/or metastatic tumours as well as from the corresponding Nude mice xenotransplant (2 TMAs), c) only paraffin block available from xenotransplanted Chs (1 TMA). A reclassification of all the cases was performed; in addition, conventional hematoxylin-eosin as well as immunohistochemistry staining (S100, SOX-9, Ki-67, BCL-2, p53, p16, CK, CD99, Survivin and Caveolin) was analyzed in all the TMA.</p> <p>Results</p> <p>The distribution of the cases according to the histopathological pattern and the location of tumours were as follows: fourteen Grade I Chs (all primaries), two primary Grade II Chs, ten Grade III Chs (all primaries), five dedifferentiated Chs (four primaries and one primary with metastasis), and two Chs from cell cultures (Ch grade III). One recurrent extraskeletal myxoid Chs was included as a control in the TMA. Although there was heterogeneity in immunohistochemistry results of the different material analyzed, S100, SOX-9, Caveolin and Survivin were more expressed. The number of passages in xenotransplants fluctuated between 1 and 13. Curiously, in Grade I Chs, these implanted tumours hardly grew, and the number of passages did not exceed one.</p> <p>Conclusion</p> <p>The study of Chs by means of TMA techniques is very important because it will improve the assessment of different antibodies applied in the immunohistochemical assays. Xenotransplanted tumours in TMA improve knowledge concerning the variability in the morphological pattern shown by these tumours during the evolution in nudes.</p

Population Studies of Eurasian Watermilfoil ( Myriophyllum spicatum ) and Zebra Mussels (Dreissena polymorpha) in Conesus Lake, N.Y. (Summer 2000)

The primary goal of our research during the summer 2000 was to examine the distribution and density Eurasian watermilfoil beds and of populations of zebra mussels in Conesus Lake. The results of this study improve our knowledge of these populations and contribute to the scientific foundation required for consideration of possible management strategies. A secondary goal of this project was to extend our long term database on macrophyte growth at two sites first studied by Herman Forest and his colleagues in 1967

Discovery of adults linked to cloning oceanic starfish larvae (Oreaster, asteroidea: Echinodermata)

Two juvenile specimens of a new species of Oreaster were collected at Parque Nacional Arrecife Alacranes and Triángulos Oeste in the southern Gulf of Mexico. DNA of mitochondrial loci identifies them as members of the same clade as cloning larvae of Oreaster found abundantly in waters of the Florida Current-Gulf Stream system, and distinct from Oreaster clavatus and Oreaster reticulatus, the two known Oreasteridae species in the North Atlantic. Larvae from the new species of Oreaster persist as clones but also metamorphose and settle to the benthos with typical asteroid morphology. © 2019 The University of Chicago