Rangeland Journal最新文献_第3页

Herbage yield stability of cocksfoot (Dactylis glomerata L.) genotypes across rain-fed environments 雨养环境下鸭茅基因型牧草产量的稳定性

IF 1.2 4区环境科学与生态学

Rangeland Journal Pub Date : 2023-11-28 DOI: 10.1071/rj23015

Ali Vosough, Ali Ashraf Jafari, Ezzat Karami, Hooshmand Safari, Reza Talebi

{"title":"Herbage yield stability of cocksfoot (Dactylis glomerata L.) genotypes across rain-fed environments","authors":"Ali Vosough, Ali Ashraf Jafari, Ezzat Karami, Hooshmand Safari, Reza Talebi","doi":"10.1071/rj23015","DOIUrl":"https://doi.org/10.1071/rj23015","url":null,"abstract":"Cocksfoot (Dactylis glomerata L.) is a cool-season perennial grass that naturally grows in semi-steppe rangelands in Iran. In recent years, as a result of climate change, coupled with high livestock grazing, rangeland productivity has decreased. This study aimed to analyse the stability of forage dry matter (DM) production of 36 cocksfoot genotypes across four rain-fed environments (Ardebil, Zanjan, Hamadan, and Kermanshah) in Iran. At each location, an experiment was conducted using a randomised complete-block design (RCBD) with three replications over 2 years. The result of combined analysis of variance (ANOVA) across locations showed significant effects of environment (E), genotype (G), and GE interaction (P < 0.01) for DM yield. The E, G and GE interaction effects accounted for 33.19%, 17.98% and 40.52% of the total variance respectively. The GE interaction was subsequently investigated using regression stability, Additive Main effects and Multiplicative Interaction (AMMI), and genotype main effect (G) plus genotype–environment (GE) interaction (GGE) biplot analysis. According to the regression method, genotypes G2, G3, G11 and G12 with a slope close to unity, coupled with high production, had good general stability in all locations. In addition, some genotypes were specifically identified for poor- and high-performing environments. According to the AMMI-2, IPC1 vs IPC2 biplot, genotypes G2, G10, G11, G14 and G15, placed close to the origin of the biplot coupled with higher production, showed general stability in all environments. The best genotypes for the respective environments were also determined. Using the GGE biplot, genotypes G2, G3, G11 and G12 were more stable in all environments. Therefore, on the basis of all analytical methods, three local genotypes, G2 (Karaj), G3 (Marand) and G11 (Qazvin), and a foreign genotype, G14 (from, USA), were identified as most suitable genotypes for breeding improved varieties and cultivation in the study locations and similar areas.","PeriodicalId":20810,"journal":{"name":"Rangeland Journal","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138533760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparing narratives on carnivore management in a dryland ecosystem: a case study of state-backed lethal control 旱地生态系统中肉食动物管理的比较叙述:国家支持的致命控制的案例研究

4区环境科学与生态学

Rangeland Journal Pub Date : 2023-06-06 DOI: 10.1071/rj23005

Joshua Taylor, Paula Núñez, Pablo Gáspero, Simon Pooley, Valeria Fernandez-Arhex

{"title":"Comparing narratives on carnivore management in a dryland ecosystem: a case study of state-backed lethal control","authors":"Joshua Taylor, Paula Núñez, Pablo Gáspero, Simon Pooley, Valeria Fernandez-Arhex","doi":"10.1071/rj23005","DOIUrl":"https://doi.org/10.1071/rj23005","url":null,"abstract":"Lethal control of native carnivores as a principal management strategy can have unforseen ecological consequences and is often of questionable efficacy. Using as a case study a region where the lethal control of native puma and culpeo foxes has been incentivised via legislation for over 50 years, we examined how this policy has affected institutional narratives in the region. We conducted four key informant interviews with members of relevant institutions to establish their perspectives on carnivore management. We also examined the informational basis for the current legislative approach to predation, and identified topics for discussion surrounding legislation and its formation for decision-makers in the province. We identified a duality where two branches of gove rnment have contradictory policies regarding livestock production and carnivore management. All institutions involved in predation management in rural landscapes produced narratives supporting sustainable development, and suggested, in varying degrees, that alternatives to lethal control would be positive. Interviewees stated that modification of the existing laws require livestock producers to demand a change from policy-makers, who generally view carnivores poorly. Furthermore, there is evidence that discussions surrounding management strategies suffer from cultural bias, with rural inhabitants finding themselves marginalised from the decision-making process. We identified a need for empathy regarding the adverse situation of rural inhabitants facing the impacts of predation, and an appreciation of the role that carnivores play within their environments, so as to change the negative discourse surrounding human–carnivore interactions.","PeriodicalId":20810,"journal":{"name":"Rangeland Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135493360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Processes underpinning natural capital account compilation highlight the potential for low-input grazing to mitigate farm carbon emissions while also improving biodiversity outcomes 支持自然资本账户编制的过程强调了低投入放牧减少农场碳排放的潜力，同时也改善了生物多样性成果

IF 1.2 4区环境科学与生态学

Rangeland Journal Pub Date : 2023-06-06 DOI: 10.1071/rj22053

Rachel Lawrence, S. Ogilvy, D. O’Brien, Mark Gardner, S. McIntyre

{"title":"Processes underpinning natural capital account compilation highlight the potential for low-input grazing to mitigate farm carbon emissions while also improving biodiversity outcomes","authors":"Rachel Lawrence, S. Ogilvy, D. O’Brien, Mark Gardner, S. McIntyre","doi":"10.1071/rj22053","DOIUrl":"https://doi.org/10.1071/rj22053","url":null,"abstract":"Remnant woodland areas are commonly part of livestock grazing operations in temperate Australia. These remnant areas can store substantial amounts of carbon and have important biodiversity value, but are at risk of ongoing decline due to nutrient enrichment, overgrazing, clearing of woody debris and lack of tree recruitment. The process of compiling experimental farm-scale natural capital accounts (NCA) for 11 wool-growing businesses in temperate Australia demonstrated that some wool growers may be managing these areas in ways that sustained, and at times regenerated, carbon and other natural values. When managed sensitively, these largely native areas provide forage and shelter for livestock production while carbon and associated biodiversity is also protected, and in some cases regenerated. The farm-scale NCA process highlighted that for some farm businesses net sequestration of carbon can occur at a farm-scale, substantially owing to the management approach applied to these remnant areas. The process highlighted the potential for livestock grazing approaches underpinned by the ecosystem services provided by native grasses, forbs and woodlands (i.e. low-input rather than nutrient enrichment and pasture modification) to contribute to balancing carbon emissions from other areas of more intensive management within a farm business. With the current momentum worldwide aimed at achieving net zero emissions, there is an opportunity that has not existed previously to conserve, and sometimes regenerate, these remnant woodland areas on farmland. This could contribute to reversing a crisis of biodiversity loss in this threatened ecosystem while also helping farm businesses to reduce overall carbon emissions.","PeriodicalId":20810,"journal":{"name":"Rangeland Journal","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46498358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A shared purpose: increasing environmental, community and industry resilience in the Australian rangelands through improved natural resource management 共同目标：通过改善自然资源管理，提高澳大利亚牧场的环境、社区和工业复原力

IF 1.2 4区环境科学与生态学

Rangeland Journal Pub Date : 2023-05-19 DOI: 10.1071/rj23017

Dionne Walsh, Leanne Kohler

引用次数: 0

Dust-storm frequencies, community attitudes, government policy and land management practices during three major droughts in New South Wales, Australia 澳大利亚新南威尔士州三次大干旱期间的沙尘暴频率、社区态度、政府政策和土地管理做法

IF 1.2 4区环境科学与生态学

Rangeland Journal Pub Date : 2023-01-01 DOI: 10.1071/rj22059

J. Leys, S. Heidenreich, S. White, J. Guerschman, C. Strong

引用次数: 1

Rethinking policies for pastoralists – governing the rangelands 重新思考牧民政策——管理牧场