THE BIG PICTURE - SATELLITE REMOTE SENSING APPLICATIONS IN RANGELAND ASSESSMENT AND CROP INSURANCE

Livestock Production/Industries, Risk and Uncertainty,

Direct illumination calibration of telescopes at the quantum precision limit

The electronic response of a telescope under direct illumination by a point-like light source is based on photon counting. With the data obtained using the SNDICE light source and the Megacam camera on the CFHT telescope, we show that the ultimate precision is only limited by the photon statistical fluctuation, which is below 1 ppm. A key feature of the analysis is the incorporation of diffuse light that interferes with specularly reflected light in the transmission model to explain the observed diffraction patterns. The effect of diffuse light, usually hidden conveniently in the Strehl ratio for an object at infinity, is characterized with a precision of 10 ppm. In particular, the spatial frequency representation provides some strong physical constraints and a practical monitoring of the roughness of various optical surfaces.Comment: accepted for publication in Astronomy & Astrophysic

Application of remote sensing to selected problems within the state of California

There are no author-identified significant results in this report

The life system of the yellow-headed fireworm, Acleris minuta (Robinson) (Lepidoptera: Tortricidae)

A resident population of the yellow-headed fireworm, Acleris minuta (Robinson) (Lepidoptera: Tortricidae), is established in the commercial nurseries of southwestern Iowa. This species sporadically reaches pest status causing considerable damage to rosaceous and ericaceous plantings;A conceptual life system model has been constructed to explain the bionomics of A. minuta populations. The conceptual model consists of an ovipositional subsystem, a developmental subsystem for larval instars 1-4, a developmental subsystem for larval instars 5, 6, & 7 under a summer and winter color morph scheme, and an overwintering subsystem;Acleris minuta is a multivoltine pest with 4 discrete generations in southwestern Iowa. The adult moths are seasonally dimorphic. Adults from the first 3 generations emerge as orange moths, while adults from the fourth generation emerge as gray moths. Orange moths are capable of mating on day 1 post emergence between the hours of 0500 - 0800 CDST. Gray moths which emerge in the fall are not capable of mating even if environmental conditions are favorable. Apparently, both males and females overwinter and mate in the spring;Larval development proceeds through 5 stadia, 6 stadia, or 7 stadia. Reduced growth rates caused by nutrient deficiencies and other adverse environmental conditions increase the frequencies of supernumerary molts. The 6 and 7 instar modes of development are more prevalent during the fourth generation;Laboratory and ecological life tables have been constructed. Ten species of parasitoids caused significant mortality during 1977 and 1978

Aerospace Medicine and Biology: A continuing bibliography with indexes (supplement 133)

This special bibliography lists 276 reports, articles, and other documents introduced into the NASA Scientific and Technical Information System in September 1974

Plastics Derived From Derelict Fishing Gear in the Arctic: Looking at Sustainable Fisheries for a Strategy of Mitigation, Remediation and Prevention in Iceland and Alaska

Marine plastics are not just a problem, they are a silent, sinister epidemic. Marine plastics are the largest economic and ecological threat to our marine ecosystems, particularly marine plastics derived from lost and or discarded fishing gear, which affects sensitive marine communities, the chemical composition of the ocean water, and the physical makeup of the seafloor. With 6.4 million tons of marine debris entering our oceans annually, a third of which is lost fishing gear, it is estimated that, by weight, in 2050 there will be an accumulation of more plastic than fish in the ocean (Heath, 2018; Wilcox, 2015). Marine litter derived from plastic fishing gear, primarily passive gear, when lost in the ocean causes a series of consequences to the marine ecosystem, that of which increases when there are high concentrations of fishing activity in the geographic area. Arctic countries have some of the most abundant fisheries, that of which is projected to increase due to anthropogenic climate change. In the context of climate change affecting the Arctic ecosystem, in this thesis, we will review the consequences of plastics derived from fishing gear for the Arctic marine ecosystem, estimate the potential influx of derelict gear plastics originating from data obtained in Alaska and Iceland, and then confidently present effective forms of remediation, prevention, and mitigation strategized from models of sustainable fisheries to resolve the ramifications of lost and or discarded gear in Arctic communities

Great Lakes Research Review 2001

Several years ago, staff from the Great Lakes Program, the Great Lakes Research Consortium, and New York Sea Grant realized an information gap existed between peer reviewed journal articles and newsletter type information related to Great Lakes research. The Great Lakes Research Review was created to fill that gap by providing a substantive overview of research being conducted throughout the basin. It is designed to inform researchers, policy-makers, educators, managers and stakeholders about Great Lakes research efforts, particularly but not exclusively being conducted by scientists affilliated with the Consortium and its member institutions. Each issue has a special theme. Past issues have focused on the fate and transport of toxic substances, the effects of toxics, fisheries issues, and exotic species. The most recent volumes have focused on the Lake Ontario, St. Lawrence River and Lake Erie Ecosystems. The present issue is the second of two describing work related to Lake Erie. We gratefully acknowledge all of the contributing authors who willingly share their research efforts for this publication

Indian Lake Plant Survey

Indian Lake is addressing the problem of aquatic plant overgrowth. The Indian Lake Watershed Association asked our team to determine the cause and severity of the issue. The team developed protocols to survey the Lake, collected data, created a website to report information regarding the overgrowth within the lake, and updates regarding the project, including interactive maps displaying the data to keep the public informed about the situation. Future teams can use these protocols to collect data in a systematic manner, and develop a longitudinal database. The project concluded with a presentation to the Association, and members of the press

Use of Remote Sensing for Mapping and Evaluation of Mining Waste Anomalies at National to Multi-Country Scale. A Case Study to Integrate Remote Sensing Information with Thematic Data Layers and National Inventories on Mining Features in Pre-Accession ...

Abstract not availableJRC.H-Institute for environment and sustainability (Ispra