Insect Pollinators of Brassica campestris in Kumaun, West Himalaya: Influence of Crop Composition, Altitude and Flowering Phenology

Kapkoti, Bhawana; Rawal, Ranbeer S.; Joshi, Ranjan

doi:10.1007/s40009-016-0500-y

Cited by 3 publications

(2 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Uttarakhand, scholars have recommended planting certain flowering plants in the margins of apple orchards to sustain pollinator populations in and around apple orchards (Kapkoti, Joshi, and Rawal 2016; Kapkoti, Rawal, and Joshi 2016). Such interventions not only provide crucial floral resources for pollinators, they also support natural enemies of apple pests (Campbell et al 2017).…”

Section: Operationalizing An Ecological Livelihoods Framework Through...mentioning

confidence: 99%

Ecological livelihoods of farmers and pollinators in the Himalayas: Doing critical physical geography using citizen science

Luthra

Cunningham

Fraser

et al. 2022

Canadian Geographies / Géographies canadiennes

View full text Add to dashboard Cite

In farming communities dependent on the cultivation of pollinator‐dependent crops, the livelihoods of farmers are inextricably linked with pollinator health. A global pollination crisis interlinked with a crisis of food production and farmer livelihoods, exacerbated by processes of socio‐environmental change, is emblematic of the Anthropocene and of the kinds of ecosocial problems with which critical physical geography (CPG) engages. We propose examining the farmer‐pollinator system in the Indian Himalayas through an ecological livelihoods approach using a range of collaborative citizen science methods including bloom observations to document pollinator visits, plant phenological observations to document year‐round floral resource availability, and farm diaries to document orchard management practices. An ecological livelihoods approach draws on posthumanist theory, which has remained largely disengaged with methodological questions that are of concern to CPG. Citizen science, although widely used across a range of disciplines, has seen limited engagement in CPG. After elaborating some of the opportunities and challenges that an engagement between CPG, posthumanist theory, and citizen science opens up, we propose a methodology that would be simultaneously epistemological (understanding interdependence between livelihoods of farmers and pollinators) and ontological (imagining and building worlds where farmer and pollinator habitats are recomposed).

show abstract

Section: Operationalizing An Ecological Livelihoods Framework Through...mentioning

confidence: 99%

Ecological livelihoods of farmers and pollinators in the Himalayas: Doing critical physical geography using citizen science

Luthra

Cunningham

Fraser

et al. 2022

Canadian Geographies / Géographies canadiennes

View full text Add to dashboard Cite

show abstract

“…Other studies demonstrate that an insect's behavior is dependent on and determined by plant phenological stages (Posledovich et al, 2018;Gherlenda et al, 2016;Kapkoti et al, 2016;Nielsen et al, 2011;Masante-Roca et al, 2007). Likewise, the phenology of coff ee plants has implications for the H. hampei population, and some studies indicate that maximum reproduction and abundance of this species occur in specifi c stages of coff ee's phenological cycle (Fernandes et al, 2015;Mathieu et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

POPULATION DYNAMICS OF Hypothenemus hampei (Coleoptera: Scolytidae) IN AGROFORESTRY AND MONOCULTURE SYSTEMS OF CONILON COFFEE IN THE SOUTHERN PORTION OF THE STATE OF AMAZONAS, BRAZIL

et al. 2021

View full text Add to dashboard Cite

Hypothenemus hampei is the main coffee pest in the Amazon and worldwide. Although coffee cultivation exists in the State of Amazonas, there is no information regarding the behavior of this species population in this region of Brazil. Since the Amazon region is a favorable environment for H. hampei, the present study aimed to investigate this insect population in the following cultivation systems implanted in the municipality of Humaitá, Southern Amazonas: i) coffee in native forest (CNF), ii) coffee intercropped with cupuaçu and açaí (native Brazilian fruits) (CCA) and iii) coffee in monoculture (MC). Also, the climatic and phenological parameters of the plant were used in relation with the population dynamics of the insect. For that, ten baited traps were installed in each field for the monthly sampling of the H. hampei population from July/2018 to June/2019. The highest population abundance of the insect was observed during the coffee flowering season, mainly in monoculture crops, when compared to the other intercropped fields. The total mean value of the insect population observed in the three environments evaluated was highest in August/2018, with a recorded value of 1749. The increase in rainfall indexes occurred simultaneously with a decrease in the insect population; this coincides with the end of the flowering season (October/2018, 161.8 mm) and the beginning of grain formation (November/2018, 234.8 mm). The lowest abundance of the insect observed in the coffee fields in native forest, with an abundance of 83 (CNF), indicates that the local biodiversity disfavors the population size of the pest in the environment. These results suggest that phenological phases of conilon coffee and the influence of climatic conditions can result in changes in the population dynamics of the H. hampei. Coffee agroforestry systems are more promising to maintain this population at low levels.

show abstract

Do forest reserves help maintain pollinator diversity and pollination services in tropical agricultural highlands? A case study using Brassica rapa as a model

Escobedo-Kenefic,

Cardona,

Arizmendi

et al. 2024

Front. Bee Sci.

View full text Add to dashboard Cite

IntroductionHabitat loss and fragmentation have negative impacts on pollinator populations and thus on the pollination services they provide. Negative effects can be lessened by the presence of forest remnants that serve as refuges and sources of food for pollinators. However, few studies have analyzed the influence of highly heterogeneous agricultural landscapes (as commonly found in many developing countries), on pollination services.MethodsWe compared native bee diversity, pollination visitation, and fruit set of Brassica rapa L. between two land use conditions (sites maintaining more than 15% of the original forest coverture [Moderately Modified], and sites with less of 10% [Highly Modified]) in the highlands of Guatemala.ResultsNative bee diversity was higher in HM areas, although social bees were more abundant in MM sites. We did not find differences in pollinator visitation rate between conditions. HM sites were mainly visited by honeybees (Apis mellifera Linnaeus), while native bees and syrphid flies were more frequent in the MM condition. Fruit set was significantly higher in MM sites and was positively affected by natural forest areas. Experiments on pollen limitation and on pollinator efficiency stressed the importance of native pollinators in fruit production, especially in moderately modified areas.DiscussionOur results highlight the role of forest remnants for the provision of pollination services in tropical agricultural highlands and underline the relevance of appropriate management of introduced bees such as A. mellifera.

show abstract

Insect Pollinators of Brassica campestris in Kumaun, West Himalaya: Influence of Crop Composition, Altitude and Flowering Phenology

Cited by 3 publications

References 21 publications

Ecological livelihoods of farmers and pollinators in the Himalayas: Doing critical physical geography using citizen science

Ecological livelihoods of farmers and pollinators in the Himalayas: Doing critical physical geography using citizen science

POPULATION DYNAMICS OF Hypothenemus hampei (Coleoptera: Scolytidae) IN AGROFORESTRY AND MONOCULTURE SYSTEMS OF CONILON COFFEE IN THE SOUTHERN PORTION OF THE STATE OF AMAZONAS, BRAZIL

Do forest reserves help maintain pollinator diversity and pollination services in tropical agricultural highlands? A case study using Brassica rapa as a model

Contact Info

Product

Resources

About