Results 51 to 60 of about 723,578 (197)
Rural Development and the Declining Coherence of Rural Policy: An American and Canadian Perspective [PDF]
Rural development policy in North America has moved from a position of national importance to one of marginality as Canada and the United States grew. While rural policy and agricultural policy are no longer synonymous there is no firm consensus on what ...
Freshwater, David
core +1 more source
Freshwater Macroinvertebrates [PDF]
, 2003 The purpose of this resource is to sample, identify, and count macroinvertebrates at a Hydrology Site. Students collect, sort, identify, and count macroinvertebrates from habitats at their site.
The GLOBE Program, UCAR (University Corporation for Atmospheric Research)
core
Aquaculture NutritionTo further explore the impact of nutrient fortification on the ovarian secondary development of redclaw crayfish, four groups were set up: group ①, no feeding; group ②, formulated feeding; groups ③ and ④, formulated feed + nutrient bait.
Cheng Shun +8 more
doaj +1 more source
, 2020 This chapter focuses on advances in the farm production of the freshwater prawns (FWPs) Macrobrachium spp., primarily on M. rosenbergii. Farming FWPs is generally divided into four phases: reproduction, hatchery, nursery, and grow-out. The broodstock is held in earthen ponds or indoor tanks filled with freshwater.
Valenti, Wagner C. +1 more
openaire +3 more sources
Ecological Solutions and EvidenceExisting water environment policy, mostly focused on the siloed management of large waters, has not succeeded in restoring freshwater biodiversity in England and Wales.
Jeremy Biggs +5 more
doaj +1 more source
Murray-Darling basin freshwater shells: riverine reservoir effect [PDF]
, 2009 We report carbon isotope measurements on pre-bomb museum samples of freshwater mussel shells collected alive from riverine locations in New South Wales, Australia. The calculated reservoir ages, ranging from -60 to +112 years, are much smaller than those
Fink, David +3 more
core +5 more sources
Aquaculture Reports, 2018 This study was conducted to understand the associations between water quality and the phytoplankton community in intertidal mudflat pond of Limpenaeus vannamei, in the region around Hangzhou Bay.
Meng Ni +3 more
doaj +1 more source
Measuring Farm Net Income To Better Achieve Policy Objectives [PDF]
The farm problem is a longstanding topic in agricultural economics, and farm organizations continue to press claims that they are disadvantaged and deserve public support.
Freshwater, David
core +1 more source
Final report : verification of bay productivity measurement by remote sensors [PDF]
, 2004 From University of Texas at Austin Marine Science Institute to Texas Water Development BoardInteragency cooperative contract TWDB contract no. IA03-483-003July 2004Ecosystem function in estuarine environments is known to be an important indicator of ...
Montagna, Paul A. +1 more
core +1 more source