scholarly journals Effect of post-harvest forestry residue management practices on the diversity of epigeal coleopterans

2017 ◽  
Vol 70 (1) ◽  
pp. 8069-8075 ◽  
Author(s):  
Priscila Ramírez Aliaga ◽  
Amanda Huerta Fuentes ◽  
Jaime Eduardo Araya Clericus
Keyword(s):  
Species Richness ◽  
Management Practices ◽  
Diversity Index ◽  
Residue Management ◽  
Pitfall Traps ◽  
Central Chile ◽  
Post Harvest ◽  
Clear Cutting ◽  
Randomized Design ◽  
Harvest Residue

The aim of this work was to study the effect of post-harvest forestry residue management practices on the epigeal coleopterans diversity and abundance in a 1-yr old Pinus radiata plantation. Approximately 25-yr old P. radiata plantation was available, which was harvested by clear-cutting at the beginning of 2010 in Constitución, central Chile. Three post harvest residue management treatments were installed in a fully randomized design in blocks: 1) a control, where residues were intact left; 2) residue removed (> 2.5 cm diameter); and 3) burned. The coleopterans were sampled in spring and summer, using linear transects with pitfall traps. The abundance and richness, and diversity index of coleopterans were determined. A total of 23 species of 13 families were obtained. Both in the springand summer, the treatment with residues left registered significantly greater abundance and species richness. In the residue management, the practices of intact leaving residue should be considered as the least impacting on diversity and abundance of epigeal coleopterans and is recommended for creating refugee areas to promote diversity of beetles in this area of study.

Influence of post-harvest residue management and cultivar on tiller dynamics and seed yield in timothy

1994 ◽  
Vol 74 (3) ◽  
pp. 507-513 ◽  
Author(s):  
M. H. Entz ◽  
S. R. Smith Jr. ◽  
D. J. Cattani ◽  
A. K. Storgaard
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Phleum Pratense ◽  
Residue Management ◽  
Cultivar Differences ◽  
Grass Species ◽  
Compensatory Mechanisms ◽  
Burn Treatment ◽  
Post Harvest ◽  
Harvest Residue

Timothy (Phleum pratense L.) is a bunch-type cool season perennial grass species grown in Manitoba primarily for seed production. The objectives of this study were to determine the effect of post-harvest residue management (straw removal-SR, straw and stubble removal-SSR and fall burning-Burn) on tiller production, yield components and seed yield of five timothy cultivars (Basho, Climax, Goliath, Hokuo and Salvo), and to better understand the association between yield components and final seed yield in timothy crops grown in the dry subhumid region of the Canadian prairies. Two experiments were conducted over four production seasons at Arborg, MB and one production season at St. Claude, MB. Tiller number per m2 in spring (TS) and at harvest (THV) were measured in 1990 at St. Claude and in 1990 and 1991 at Arborg. Residue management (RM) treatment ranking for TS was Burn < SR < SSR, but tiller senescence and compensatory mechanisms resulted in equivalent THV values across all RM treatments. The number of seed-bearing tillers m−2 at harvest was also unaffected by RM. Seed yield was unaffected by RM in all instances, except at Arborg in 1989 where a significant RM × cultivar interaction was observed. The basis of the interaction was the greater sensitivity of Hokuo to the Burn treatment. Cultivar differences for seed yield were relatively consistent over years and between the two experiments, with Climax always ranking in the high yielding group and Salvo with the low yielding group. Based on analysis of yield components, it appeared that RM most affected early season growth (i.e. TS), while cultivar most affected later season growth (fertile tillers per unit area, seed yield per fertile tiller (SYFT)). Seed yield differences were most closely associated with SYFT (r2 = 0.97**) across cultivar treatments. Key words: Burning, straw removal, harvest index, yield components, forages

Effects of post-harvest residue management on labile soil phosphorus in a Pinus radiata plantation

1990 ◽  
Vol 38 (1-2) ◽  
pp. 13-25 ◽  
Author(s):  
M.A. Bekunda ◽  
P.J. Smethurst ◽  
P.K. Khanna ◽  
I.R. Willett
Keyword(s):  
Pinus Radiata ◽  
Soil Phosphorus ◽  
Residue Management ◽  
Post Harvest ◽  
Harvest Residue

scholarly journals Assessment of waste grain densities to aid waterfowl conservation in the Klamath Basin of northeastern California and southeastern Oregon

2021 ◽  
Author(s):  
Daniel A. Skalos ◽  
Joseph P. Fleskes ◽  
Jeffery D. Kohl ◽  
Mark P. Herzog ◽  
Michael L. Casazza
Keyword(s):  
Management Practices ◽  
Residue Management ◽  
Mixed Effect ◽  
Post Harvest ◽  
Lake Region ◽  
Cereal Grain ◽  
Klamath Basin ◽  
Road Survey ◽  
Wildlife Refuges ◽  
Tule Lake

Post-harvest waste seed from cereal grains is a major dietary component of waterfowl in the Klamath Basin in northeastern California and southeastern Oregon, a region that plays host to over a million waterfowl annually. Understanding food abundance is critical to local waterfowl management, therefore we conducted a study in 2008 to investigate waste grain densities in barley, oat and wheat fields. We used hierarchal mixed effect models to assess several factors that may affect waste grain densities post-harvest. We also compared the effects of residue management practices to measure the effect of these treatments. To understand the scope of post-harvest practices, we conducted a weekly road survey to document treatments applied to fields in our study area. We found that, region, best explained the variance of post-harvest waste grain in barley fields, where the Tule Lake region had 89% greater densities than Lower Klamath. Neither harvester age or baling affected waste grain in oats fields. In wheat fields, the model containing region and lodging ranked highest, where the Tule Lake region had 66% greater waste densities than Lower Klamath and lodging increased waste grain by 70%. Burning did not reduce waste grain in barley or oat fields. Chisel-disking reduced waste grain by 94% in wheat fields, compared to post-harvest. Our field treatment survey found that 70% of barley fields were untreated while 18% were disked and 13% were burned and flooded. We estimated that 82% of oat fields were burned post-harvest while 18% were burned and flooded. In wheat, 61% of fields were left untreated, while 16% were disked, 8% were chisel-plowed and 7% were flooded post-harvest. Flooding and burning occurred primarily on National Wildlife Refuges while disking, chisel-plowing and post-harvest irrigation occurred solely on private properties. Our results indicate that reducing tillage treatments would boost accessibility of cereal grain food resources to waterfowl in the Klamath Basin, and incentives to flood grain fields on private properties should be considered for the same purpose when and where possible.

scholarly journals Diversity of Ground-Dwelling Ants (Hymenoptera: Formicidae) in Phulchowki Hill, Lalitpur, Nepal

2020 ◽  
Vol 35 (1) ◽  
pp. 11-20
Author(s):  
Tulsi Raj Adhikari ◽  
Shubha Ratna Shakya ◽  
Shambhu Adhikari ◽  
Indra Prasad Subedi
Keyword(s):  
Species Richness ◽  
Diversity Index ◽  
Species Abundance ◽  
Similarity Index ◽  
Shannon Diversity Index ◽  
Pitfall Traps ◽  
Species Evenness ◽  
Shannon Diversity ◽  
Altitudinal Range ◽  
Collection Methods

The study assesses the diversity of ground-dwelling ants (Hymenoptera: Formicidae) in Phulchowki Hill, Lalitpur, Nepal focusing their species richness altitudinally and seasonally. Ants were sampled from June 2018 to February 2019using pitfall traps, bait traps and hand collection methods covering an altitudinal range from 1500 m to 2700 m in five selected sites (1500 m, 1800 m, 2100 m,2400 m, and 2700 m). A total of 1443 specimens representing four subfamilies, 12genera and 18 morph species were collected. Formicinae (57.58%) was recorded as the most abundant subfamily followed by Myrmicinae (38.53%), Ponerinae (2.21%) and Pseudomyrmicinae (1.66%). Camponotus was the most speciose (4morphospecies) genus and was most abundant in all seasons. The highest Similarity index (0.667) was recorded between the first and second sites among five sites. Species richness (16), Shannon diversity index (1.504) and abundance (631) were the highest in autumn. Similarly, species richness (12), Shannon diversity index (1.399) and species evenness (0.563) were recorded highest at 2100 m altitude, while species abundance (519) was maximum at 1500 m.

Post‐Harvest Residue Management of Creeping Red and Chewings Fescue Seed Crops

1998 ◽  
Vol 90 (1) ◽  
pp. 69-73 ◽  
Author(s):  
William C. Young ◽  
Gale A. Gingrich ◽  
Thomas B Silberstein ◽  
Bryon M. Quebbeman
Keyword(s):  
Residue Management ◽  
Post Harvest ◽  
Seed Crops ◽  
Harvest Residue
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