• 736498_350762518363910_1346032675_o(1) Plant-pollinator Network along a Gradient of Agricultural Intensification in Tripura

– Pushan Chakrabarty

In my study, I will try to establish a plant-pollinator network matrix in the agricultural system along a gradient of intensification. In most studies on plant pollinator network focus has been only on flower visitation which is not a very good measure of pollination as a visitor may also rob the floral rewards without aiding in pollination. Therefore we are also trying to investigate the pollen transport network which will give us a complete understanding of plant pollinator network. We are also trying to investigate nocturnal pollen transport network in agricultural farmland which is also a less explored area in our landscapes. Our nocturnal study is mainly focused on pollen delivery by moths which are most abundant but less explored group. The role of non-crops in a plant-pollinator network will also be enlightened in this study.

In India, very less or no study has been done on pollinators in vegetables systems along a gradient of intensification. Almost, there is no prominent work on plant-pollinator networks.. Also, study on pollen transport (both day & night) is also lacking in this part of the world. We, in our study will try to fill that gap which can ultimately be implemented in pro-active designing of agro-ecosystems.

 

Objectives

(i)  To identify local pollinator groups of the study areas and determine the effect of agricultural intensification on the plant-pollinator networks.

(ii)  To establish a pollen transport network along agricultural intensification gradient.

(iii) To determine the temporal and seasonal variations in pollinator assemblage.

(iv) To determine the role of non crops in vicinity of the crop, in sustaining the pollinators.

 

  • img_9431Assessment of the status of pollination service delivery in some selected vegetable crops across gradients of agricultural intensification in Eastern India.

– Arnob Chatterjee

In India, many commercial important crops (brinjal, mustard, gourds, sunflower, pumpkin etc.) depend on insect pollination. The discriminate usage of chemical pesticides and Insecticides affect bees and other insect pollinators directly. However, little information is available on the extent of pollination service loss and if there is any pollination limitation in pollinator dependent crops. Reduction in pollination service can result in improper seed set formation and also decreases the quality of the fruit. This would impose immense loss to the farmers and create economic discrepancy. Therefore in Indian context it is important to investigate if at all there is any pollination limitation across gradient of agricultural intensification and if so to what extent pollination limitation impacts seed set formation in important vegetable cropping systems.

Objective:

  1. To identify pollen requirements of some selected vegetable crop species.
  2. To quantify if the pollination requirement is being met across gradient of agricultural intensification.
  3. To assess the extent to which pollination limitation impacts seed set formation and fruit quality.

 

  • The 774919_489515071094612_1408968238_oRole of Native Plants on Ecosystem Service Delivery in an Indian Agro-Ecosystem

– Supratim Laha

 The native flora of a region supports native fauna that may play a role in ecosystem service delivery. If the native vegetative cover of a particular region becomes threatened through various anthropogenic activities, we can assume that in near future those faunal communities, dependent on those threatened native plants could also be under threat. So, in order to conserve the native faunal communities of a region we need to maintain those particular native plant communities of that region. The aim of this project is to understand the role of native plants in delivering ecosystem services. This project primarily focuses on two services- pollination and natural/biological pest control.

The expected outcome of this project is to develop methods to conserve the ecosystem service providers (pollinators and other beneficial insects) through management and re-establishment/re-introduction of some native plant populations in the agricultural landscape.

Objectives

i)   To study the effect of native plants on pollinators and beneficial insect communities in an agro-ecosystem.

ii)  To assess the efficiency of some native plants in providing pollination services by supporting crop pollinators.

iii) To assess the efficiency of some native plants in natural/biological pest control by supporting natural predator population.

iv) To assess how these native plants attract pollinators and other flower visitors.

v)  To study the effect of a combination of native plants present along with a crop type

 

  • RitamPollinator Community along an Agricultural Intensification Gradient in West Bengal, India.

-  Ritam Bhattacharyya

The alluvial regions of West Bengal became the epicentres of agricultural intensification in the wake of promotion of Green Revolution agriculture. Hence, it is also a potential candidate for loss of pollinators and pollination services. It is hence imperative that the status of natural pollinator fauna and pollination services of this region is ascertained.

The proposed study will make such assessment and enumerate the insect pollinator abundance and diversity in some select pollinator dependent crops and also in the surrounding landscape along an agricultural intensification gradient. Attempt will also be made to ascertain the effective insect pollinators of economically important pollinator dependent crops. The proposed study would also attempt to make an assessment of the economic losses due to pollination service loss if any. Vice versa, attempt will also be made to improve productivities of some select vegetable crops that depend on cross pollination, through enhancement of pollination service from the natural pollinators like bees.

The proposed study assumes added importance as very little information is available on the status of insect pollinator community in Indian agro-ecosystems (as found from extensive literature survey on the work on the status of pollinator community in Indian subcontinent). The proposed study will also throw light on the feasibility of any restoration of pollination services in agro-ecosystems in the context of our country and the state of West Bengal.

Objectives:

i) To compare the pollinator abundance and diversity in some select vegetable crops in both chemical and organic farming system.

ii) To assess the natural pollinator community in the agricultural landscape along agricultural intensification gradient.

iii) To determine the effective pollinators of some economically important pollinator dependent vegetable crops.

iv) To assess the economic loss due to pollination service loss, if any.

 

  • PriyadarshiniPhenotypic traits and diversity in natural honey bee populations along an agricultural intensification gradient in Eastern India

– Priyadarshini Chakrabarti

Pollinators are an indispensable part of our agro-ecosystem. Pollinators, especially honey bees, are a prerequisite for a healthy crop production. Ecosystem services provided by honey bees are of great benefit to human beings.  However, there is serious concern about the loss of ecosystem service provided by the honey bees due to population loss and is being attributed to agricultural intensification as one of the major drivers.

I am looking at the possible effects of pesticides on the phenotypic traits in natural populations of honey bees and also aims to study, if, populations surviving in pesticide zones, have differential genetic diversity as a coping mechanism under pesticide stress.

Objectives:

i) To observe changes in physiological and behavioural traits in honey bees exposed to varying usage of pesticides along agricultural intensification gradient.

ii) To study genetic diversity in natural honey bee populations along an agricultural intensification gradient.

 

 

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