Long-Term Environmental and Socio-ecological Monitoring in Transboundary Landscapes; An Interdisciplinary Implementation Framework - ICIMOD Working Paper 2015/2

2015 ◽  
Author(s):  
N. Chettri ◽  
P. Bubb ◽  
R. Kotru ◽  
G. Rawat ◽  
R. Ghate ◽  
...  
Keyword(s):  
Ecological Monitoring ◽  
Implementation Framework ◽  
Working Paper

scholarly journals Simulated Fishing to Untangle Catchability and Availability in Fish Abundance Monitoring

2021 ◽  
Vol 19 (3) ◽  
Author(s):  
Vanessa Tobias ◽  
Keyword(s):  
San Francisco ◽  
Water Clarity ◽  
Ecological Monitoring ◽  
Monitoring Data ◽  
Delta Smelt ◽  
Individual Based Simulation ◽  
The Relationship ◽  
True Population

In fisheries monitoring, catch is assumed to be a product of fishing intensity, catchability, and availability, where availability is defined as the number or biomass of fish present and catchability refers to the relationship between catch rate and the true population. Ecological monitoring programs use catch per unit of effort (CPUE) to standardize catch and monitor changes in fish populations; however, CPUE is proportional to the portion of the population that is vulnerable to the type of gear used in sampling, which is not necessarily the entire population. Programs often deal with this problem by assuming that catchability is constant, but if catchability is not constant, it is not possible to separate the effects of catchability and population size using monitoring data alone. This study uses individual-based simulation to separate the effects of changing environmental conditions on catchability and availability in environmental monitoring data. The simulation combines a module for sampling conditions with a module for individual fish behavior to estimate the proportion of available fish that would escape from the sample. The method is applied to the case study of the well monitored fish species Delta Smelt (Hypomesus transpacificus) in the San Francisco Estuary, where it has been hypothesized that changing water clarity may affect catchability for long-term monitoring studies. Results of this study indicate that given constraints on Delta Smelt swimming ability, it is unlikely that the apparent declines in Delta Smelt abundance are the result of changing water clarity affecting catchability.

scholarly journals Alois Zlatnik – ein wegweisender Forscher in transkarpatischen Urwäldern | Alois Zlatnik – Innovative researcher in the virgin forests of Transcarpathia

2003 ◽  
Vol 154 (6) ◽  
pp. 219-225
Author(s):  
Stepan Stoyko ◽  
Ivan Delehan ◽  
Nino Kuhn ◽  
Vasyl Lavnyy
Keyword(s):  
Nature Conservation ◽  
Academic Career ◽  
Ecological Monitoring ◽  
Plant Taxonomy ◽  
Mountain Regions ◽  
Ecosystem Research ◽  
The Czech Republic ◽  
Ecological Principles ◽  
Forest Typology

Professor Alois Zlatnik (born 1902 in Dvur Kralovy, Czechoslovakia,died 1979 in Brno) was a well-known scientific researcher in the Czech Republic, Slovakia and other European countries. His academic career encompassed forest typology,phytobiocoenology, vegetation ecology and plant taxonomy. His fundamental exploration of the biocoenological structure of the virgin forests of Transcarpathia (Ukraine) commenced in the 1930s. At the same time he can be seen as the founder of long-term forest ecosystem research (ecological monitoring). Zlatnik was also an innovator regarding ecological principles of nature conservation of mountain regions.

scholarly journals Simulated Fishing to Untangle Catchability and Availability in Fish Abundance Monitoring

2021 ◽  
Author(s):  
Vanessa Tobias
Keyword(s):  
San Francisco ◽  
Water Clarity ◽  
Ecological Monitoring ◽  
Monitoring Data ◽  
Delta Smelt ◽  
Individual Based Simulation ◽  
The Relationship ◽  
True Population

In fisheries monitoring, catch is assumed to be a product of fishing intensity, catchability, and availability, where availability is defined as the number or biomass of fish present and catchability refers to the relationship between catch rate and the true population. Ecological monitoring programs use catch per unit of effort (CPUE) to standardize catch and monitor changes in fish populations; however, CPUE is proportional to the portion of the population that is vulnerable to the type of gear that is used in sampling, which is not necessarily the entire population. Programs often deal with this problem by assuming that catchability is constant, but if catchability is not constant, it is not possible to separate the effects of catchability and population size using monitoring data alone. This study uses individual-based simulation to separate the effects of changing environmental conditions on catchability and availability in environmental monitoring data. The simulation combines a module for sampling conditions with a module for individual fish behavior to estimate the proportion of available fish that would escape from the sample. The method is applied to the case study of the well-monitored fish species Delta Smelt (Hypomesus transpacificus) in the San Francisco Estuary, where it has been hypothesized that changing water clarity may affect catchability for long-term monitoring studies. Results of this study indicate that given constraints on Delta Smelt swimming ability, it is unlikely that the apparent declines in Delta Smelt abundance are due to an effect of changing water clarity on catchability.

scholarly journals GENERAL ANALYSIS OF LONG-TERM INTEREST RATES

2020 ◽  
Vol 23 (01) ◽  
pp. 2050002
Author(s):  
FRANCESCA BIAGINI ◽  
ALESSANDRO GNOATTO ◽  
MAXIMILIAN HÄRTEL
Keyword(s):  
Interest Rates ◽  
Term Structure ◽  
Applied Mathematics ◽  
Mathematical Finance ◽  
Rational Model ◽  
No Arbitrage ◽  
Working Paper ◽  
Social Discounting ◽  
The Relationship

We introduce here the idea of a long-term swap rate, characterized as the fair rate of an overnight indexed swap (OIS) with infinitely many exchanges. Furthermore, we analyze the relationship between the long-term swap rate, the long-term yield, (F. Biagini, A. Gnoatto & M. Härtel (2018) Affine HJM Framework on [Formula: see text] and long-term yield, Applied Mathematics and Optimization 77 (3), 405–441, F. Biagini & M. Härtel (2014) Behavior of long-term yields in a lévy term structure, International Journal of Theoretical and Applied Finance 17 (3), 1–24, N. El Karoui, A. Frachot & H. Geman (1997) A note on the behavior of long zero coupon rates in a no arbitrage framework. Working Paper. Available at Researchgate: https://www.researchgate.net/publication/5066730) , and the long-term simple rate (D. C. Brody & L. P. Hughston (2016) Social discounting and the long rate of interest, Mathematical Finance 28 (1), 306–334) as long-term discounting rate. Finally, we investigate the existence of these long-term rates in two-term structure methodologies, the Flesaker–Hughston model and the linear-rational model. A numerical example illustrates how our results can be used to estimate the nonoptional component of a CoCo bond.

Long-term care – a review of global funding models ‐ Abstract of the London discussion

2013 ◽  
Vol 19 (1) ◽  
pp. 96-115
Author(s):  
J. K. (Hamish) Wilson
Keyword(s):  
Long Term Care ◽  
Publication Type ◽  
Term Care ◽  
Working Paper

This abstract relates to the following paper:ElliottS., GoldsS., SissonsI. and WilsonH.Long-term care – a review of global funding models (a working paper).British Actuarial Journal, doi:10.1017/S1357321713000329

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