Populations of the eastern oyster (Crassostrea virginica) have experienced declines from overfishing and disease throughout much its US range, though development maximum sustainable yield (MSY) management criteria has been elusive. This is due in part to discordance between spawning stock recruits, as classic stock–recruitment model does not account for requirement shell substrate on which recr...

Abstract Scad ( Decapterus sp.) is one of the small pelagic resources that play a big role in fishermen’s economic sector PPI Pusong, Lhokseumawe. Based on time series data within period 5 years (2016-2020) scad production tends to fluctuate every year, while fishing grounds are farther than previous years, namely 4-20 miles 80-200 miles. This indications disruption fish resources. Therefore, i...

The Faustmann formula, equivalent to the land expectation value (LEV), yields present value, starting with bare land, of an infinite series future timber rotations for a stand. If this formula is used find rotation age that maximizes lower annual harvest will result when compared maximum sustained yield (MSY) regime ownership many stands. However, LEV strongly preferred by economists. This vs. ...

For the hypergeometric system E(3, 6;α) of type (3, 6), two special cases α ≡ 1/2 and α ≡ 1/6 are studied in [MSY] and [MSTY2], respectively. The monodromy group of the former is an arithmetic group acting on a symmetric domain, and that of the latter is the unitary reflection group ST34. In this paper, we find a relation between these two groups.

A system of n competing logistical species of the Volterra type under proportional harvesting strategy is analyzed. In case of selective harvesting, when the effort is adjusted to each species, the optimum effort may result in the total maximum sustainable yield (TMSY(1)). When it exists, reaching TMSY(1) does not affect the system stability character, but it does affect the state, and hence so...

The male-specific region of the human Y chromosome (MSY) contains eight large inverted repeats (palindromes), in which high-sequence similarity between repeat arms is maintained by gene conversion. These palindromes also harbor microsatellites, considered to evolve via a stepwise mutation model (SMM). Here, we ask whether gene conversion between palindrome microsatellites contributes to their m...