scholarly journals Effects of Wetland Presence and Upland Land Use on Wild Hymenopteran and Dipteran Pollinators in the Rainwater Basin of Nebraska, USA

Wetlands ◽  
2019 ◽  
Vol 40 (5) ◽  
pp. 1017-1031
Author(s):  
Angela Begosh ◽  
Loren M. Smith ◽  
Cynthia N. Park ◽  
Scott T. Mcmurry ◽  
Ted G. Lagrange
Keyword(s):  
Growing Season ◽  
Buffer Strips ◽  
Restored Wetlands ◽  
Rainwater Basin ◽  
Pollinator Abundance ◽  
Insect Pollinator ◽  
Insect Pollinators ◽  
Pollinator Conservation ◽  
Land Condition ◽  
Sweep Net

AbstractPollination is an ecosystem service that is in jeopardy globally. Decreasing trends in wild pollinator populations are primarily attributed to habitat loss and degradation. These concerns are especially apparent in the Rainwater Basin of Nebraska, USA where more than 90% of the land has been cultivated and 90% of the wetlands have been lost. We compared hymenopteran and dipteran pollinator abundance, richness, and diversity in 28 wetlands and their adjacent uplands within 3 dominant land-condition types: cropped, restored, and reference state. We used vane traps to capture local pollinator insects and sweep nets to collect insect pollinators on flowers. Vane-trap captures revealed a greater abundance, richness, and diversity of hymenopteran pollinators in uplands as compared to wetlands over the entire growing season in all land-condition types. However, net collections showed that hymenopterans foraged more in wetlands than in uplands, especially in restored wetlands. The exception was September when hymenopterans were captured in uplands more than wetlands while feeding on late season forbs. Dipteran vane-trap and sweep-net captures primarily consisted of hoverflies (Syrphidae). Hoverflies were more abundant in wetlands than uplands. All pollinators used both wetlands and uplands for resources. Thus, insect-pollinator conservation can be enhanced by promoting native forb communities and pollinator habitat through wetland restoration and the planting of buffer strips.

scholarly journals INSECT POLLINATORS DIVERSITY IN AVOCADO ORCHARD DURING FLOWERING PERIOD IN LUSHOTO DISTRICT TANZANIA

2020 ◽  
Vol 7 (12) ◽  
pp. 20-24
Author(s):  
Christopher L Materu
Keyword(s):  
Species Diversity ◽  
Honey Bees ◽  
Stingless Bee ◽  
Insect Species ◽  
Population Estimates ◽  
Insect Pollinator ◽  
Flowering Season ◽  
Population Comparison ◽  
Insect Pollinators ◽  
Sweep Net

Insect pollinator diversity is key to ensuring adequate fruit yields within avocado orchards. Bee and non-bee insect species in avocado growing areas worldwide, has been considered as potential pollinators. Despite of this information in Tanzania there has been little research into which pollinator insect species diversity visit avocado flowers during flowering season. The study was conducted at Jaegetal avocado orchard from 450 trees of Hass variety planted at spacing of 10m x 10m. Sample size was 10 trees were used to generate pollinator’s population estimates. The orchard is located at S04˚47ʹ41.7ʹʹ and E038˚13ʹ11.8ʹʹ. Sweep net, forceps and aspirator were used to estimate pollinator’s diversity during avocado production season 2018/19. The results showed a total of 115 individuals were sampled and honey bees were more abundant flower visitors representing 60% of all insects recorded. The second species observed included the stingless bee representing (26%), followed by tachnid fly (6%) and hoverfly (6%). The least species in abundance was ants (1%) and wasps (1%). Mean population comparison there was significant differences P< 0.005.Understanding pollinators species diversity interaction between honey bee and other flower visitor’s abundances within and outside orchards could assist in improving pollination recommendations in avocado growing areas.

FERTILITY COMPONENTS IN A FABA BEAN LINE NEAR-ISOGENIC FOR MALE STERILITY

1986 ◽  
Vol 66 (2) ◽  
pp. 235-239 ◽  
Author(s):  
G. DUC ◽  
G. G. ROWLAND ◽  
J. PICARD
Keyword(s):  
Male Sterility ◽  
Vicia Faba ◽  
Seed Yield ◽  
Faba Bean ◽  
Yield Components ◽  
Male Sterile ◽  
Potential Yield ◽  
Insect Pollinator ◽  
Insect Pollinators ◽  
Vicia Faba L

A near-isogenic faba bean (Vicia faba L.) line, segregating in a 1:1 ratio of male-fertile to male-sterile plants, was used to study the importance of insect pollinators on ovule fertilization and yield components of the first five flowering nodes. The fertilization of ovules from open-pollinated plants at the higher insect pollinator site of Dijon, France was 83%, as compared with 50% at the lower insect pollinator activity site of Saskatoon, Canada. No significant differences in total fertilized ovules were found between male-fertile and male-sterile plants at Dijon, but male-fertile plants at Saskatoon had significantly more fertilized ovules than male-sterile plants. Seed production on the first five flowering nodes was significantly greater at Saskatoon. Thus, while insect pollinators are important in determining the potential yield of a faba bean plant, other factors, such as environment, determine the ultimate yield.Key words: Vicia faba, ovule fertilization, seed yield, faba bean, male sterility

scholarly journals Pollinator Fauna of Sesame Crop (Sesamum Indicum L.) in Ismailia Governorate, Egypt

2013 ◽  
Vol 46 (2) ◽  
pp. 53-64 ◽  
Author(s):  
S.M. Kamel ◽  
A.E.H. Blal ◽  
H.M. Mahfouz ◽  
M. Said
Keyword(s):  
Dominant Species ◽  
Digital Camera ◽  
Sesamum Indicum ◽  
Pitfall Traps ◽  
Experimental Site ◽  
Growing Seasons ◽  
Carpenter Bees ◽  
Insect Pollinators ◽  
Pollinator Fauna ◽  
Sweep Net

Abstract A survey of insect pollinators associated with sesame, Sesamun indicum L. (Pedaliaceae), was conducted at the Agriculture Research Farm, Faculty of Agriculture, University of Suez Canal during the growing seasons of 2011 and 2012. All different insect pollinators which found on the experimental site were collected for identification. Sampling was done once a week and three times a day. Three methods were used to collect and identify insects from the sesame plants (a sweep net, pitfall traps, digital camera and eye observation). A total of 29 insect species were collected and properly identified during the survey. Insect pollinators which recorded on the plants were divided into four groups, 18 belonged to Hymenoptera, seven to Diptera, three to Lepidoptera and one to Coleoptera. Results revealed that honey-bee, Apis mellifera, was the most dominant species in the 2011 season and the second one in the 2012 season. Whereas small carpenter bees, Ceratina tarsata was the most dominant species in the 2012 season and the second one in the 2011 season. The percentage of Hymenoptera was higher in the two studied seasons by 90.94% and 89.59%, followed by Diptera by 3.93% and 5.38%, then Lepidoptera by 3.58% and 3.62, and in the last Coleoptera by 1.53% and 1.39%, respectively.

Nitrogen removal and cycling in restored wetlands used as filters of nutrients for agricultural runoff

1997 ◽  
Vol 35 (5) ◽  
pp. 255-261 ◽  
Author(s):  
Francisco A. Comín ◽  
Jose A. Romero ◽  
Valeria Astorga ◽  
Carmen García
Keyword(s):  
Total Nitrogen ◽  
Dissolved Organic Nitrogen ◽  
Organic Nitrogen ◽  
Inorganic Nitrogen ◽  
Nitrogen Retention ◽  
Growing Season ◽  
Agricultural Runoff ◽  
Dissolved Inorganic Nitrogen ◽  
Restored Wetlands ◽  
Irrigation Network

Four restored wetlands dominated by Phragmites australis, Typha latifolia and Scirpus lacustris were used to improve the quality of agricultural runoff in the Delta of the Ebro River (NE Spain) in 1993. The wetlands were continuously flooded with water from a ricefield irrigation network during the growing season and received water with between 0-270 mg m−2d−1 of total nitrogen, 29-105 mg m−2d−1 of dissolved inorganic nitrogen and 0-27 mg m−2d−1 of dissolved organic nitrogen. Surface outflows contained between 0-80 mg m−2d−1 of total nitrogen, 0-12 mg m−2d−1 of dissolved inorganic nitrogen and 1-19 mg m−2d−1 of dissolved organic nitrogen. The nitrogen retention efficiency was close to 100% of the input, except for dissolved organic nitrogen at the end of the growing season. The denitrification rates measured by the acetylene reduction in the sediment ranged between 0 and 3.46 mg N m−2 d−1 and represented between 0 and 12% of the inflowing dissolved inorganic nitrogen. Emergent macrophytes accumulated between 20 and 100 mg N m−2 d−1, which accounts for between 66 and 100% of the inflowing dissolved inorganic nitrogen. The wetland sediment accumulated between 111 and 250 mg N m−2 d−1 during the six month growing season. The removal rate constants calculated according to a first - order plug - flow kinetics, were between 0.01-0.075 m d−1 for total nitrogen and 0.01-0.3 m d−1 for dissolved inorganic nitrogen. Plant uptake, detritus accumulation and decomposition, and nitrogen recycling in the sediment are major processes for nitrogen retention and recycling in the wetlands. This type of wetlands, restored from ricefields, act as highly efficient water polishing filters for agricultural runoff and, at the same time, can contribute to increase the habitat biodiversity of large areas where rice is cultivated extensively.

Managing habitats on English farmland for insect pollinator conservation

2015 ◽  
Vol 182 ◽  
pp. 215-222 ◽  
Author(s):  
John M. Holland ◽  
Barbara M. Smith ◽  
Jonathan Storkey ◽  
Peter J.W. Lutman ◽  
Nicholas J. Aebischer
Keyword(s):  
Insect Pollinator ◽  
Pollinator Conservation

Planthoppers and leafhoppers of the Przedborski Landscape Park (Hemiptera: Fulgoromorpha et Cicadomorpha)

2011 ◽  
Vol 80 (2) ◽  
pp. 277-290
Author(s):  
Dariusz Świerczewski ◽  
Adam Stroiński
Keyword(s):  
Rare Species ◽  
Growing Season ◽  
First Time ◽  
Sweep Net

Planthoppers and leafhoppers of the Przedborski Landscape Park (Hemiptera: Fulgoromorpha et Cicadomorpha) Faunistic research on planthoppers and leafhoppers was carried out in 2009 at 20 collecting sites located in the central part of the Przedborski Landscape Park. Insects were sampled using a standard sweep-net during the growing season from May until September. A total of 663 specimens representing 101 species were collected, which constitute about 19% of the Polish planthopper and leafhopper fauna. Zygina lunaris (Mulsant et Rey, 1855) was recorded in Poland for the first time. Additional localities for rare species such as Eurybregma nigrolineata Scott, 1875, Balcanocerus larvatus (Herrich-Schäffer, 1837), Eupteryx adspersa (Herrich-Schäffer, 1838), Zygina schneideri (Günthart, 1974), Metalimnus steini (Fieber, 1869), Diplocolenus bohemani (Zetterstedt, 1840) and Erzaleus metrius (Flor, 1861) are also given.

scholarly journals Insect pollinator dependence of shea (Vitellaria paradoxa C.F. Gaertn.) in the Guinea Savanna zone of Ghana

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Latif Iddrisu Nasare ◽  
Peter K. Kwapong ◽  
Dzigbodi Adzo Doke
Keyword(s):  
Tree Species ◽  
Fruit Set ◽  
Shea Butter ◽  
Vitellaria Paradoxa ◽  
Insect Pollination ◽  
Monetary Value ◽  
Guinea Savanna ◽  
Insect Pollinator ◽  
Insect Pollinators ◽  
Savanna Zone

AbstractShea (Vitellaria paradoxa C.F. Gaertn.) is a multipurpose tree species indigenous to the Sudano Sahelian zone of Africa and occurs as the most abundant economic tree species in northern Ghana. The edible oil (shea butter) extracted from shea kernel is ranked as the most economic product of the species. Although fruit set and yield of shea are known to be influenced by insect pollination, the actual contribution of insect pollinators to its reproductive success has rarely been studied. This study estimated the percentage insect pollinator dependence and monetary value of insect pollination per bag of shea kernel (85 kg) in the Guinea savanna zone. Open pollination and insect exclusion treatments were applied to the flowers of 18 randomly selected matured shea trees and observed from the onset of flowering to fruit maturity. Proportion of total production value attributed to insect pollination approach was used in estimating the monetary value of pollination per bag of shea kernel with the average market price as proxy. The study revealed an insect pollinator dependence of 77% and 73% for fruit set and dry kernel yield, respectively. Mean number of fruit set per inflorescence varied significantly between insect-excluded and open-pollinated inflorescences (p < 0.05). The monetary value of insect pollination was estimated at GH₵ 73.21 (US$ 18.67) per bag of kernel as of August 2016. Shea is a high insect pollinator–dependent species and the conservation of insect pollinators would be critical to the sustainability of yield.

scholarly journals Notes on the Biology of the Cixiid PlanthopperCixius meridionalis(Hemiptera: Fulgoroidea)

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
M. L. Bowser
Keyword(s):  
Life History ◽  
Direct Observation ◽  
Picea Mariana ◽  
Host Plants ◽  
Growing Season ◽  
Important Species ◽  
Empetrum Nigrum ◽  
Potential Host ◽  
History Of ◽  
Sweep Net

With the exception of a handful of economically important species, the biology of cixiid planthoppers (Hemiptera: Fulgoroidea: Cixiidae) is poorly known. The host plants and life history ofCixius meridionalisBeirne were investigated in a wetland in Soldotna, Alaska. Specimens were collected over the course of the growing season by hand, aspirator, Berlese funnel, and sweep net. A handful of live nymphs were placed in a terrarium containing potential host plants for direct observation of feeding.C. meridionaliswas found to feed on roots ofPicea mariana(Mill.) Britton, Sterns & Poggenb,Empetrum nigrumL.,Chamaedaphne calyculata(L.) Moench, andVaccinium vitis-idaeaL. At least within the study area,C. meridionalisappears to require multiple years to reach adulthood, with overwintering in nymphal instars.C. meridionaliswas occasionally tended byMyrmica alaskensisWheeler.

scholarly journals Keanekaragaman Serangga Polinator Pada Tanaman Nanas (Ananas comosus (L.) Merr.) Di Desa Bincau

2020 ◽  
Vol 9 (2) ◽  
pp. 154
Author(s):  
Manap Trianto ◽  
Kaini Kaini ◽  
Saliyem Saliyem ◽  
Eko Warsih ◽  
Winarsih Winarsih
Keyword(s):  
Diversity Index ◽  
Sticky Trap ◽  
Ananas Comosus ◽  
Purposive Sampling ◽  
Pollinator Diversity ◽  
Insect Pollinator ◽  
Insect Pollinators ◽  
Time Periods ◽  
Yellow Sticky Trap ◽  
Made In

Pollinator insects is an animal that moves pollen from the male anther of a flower to the female stigma of a flower. The purpose of this study was to determine the diversity of insects pollinators in the pineapple (Ananas comosus (L.) Merr.) plantation of Bincau Village, Martapura District, Banjar Regency, South Kalimantan. Sampling was done by purposive sampling using a yellow sticky trap. The customer observations are made in visual control. Observation starts at 07.00-18.00 WITA which is divided into 3 time periods, namely: 07.00-10.00 WITA, 11.00-14.00 WITA and 15.00-18.00 WITA. The data obtained were analyzed using the diversity index Shannon-Wiener (H'). The results showed that the total individual of pollinator insects in pineapple plantations was 517 individuals, consisting of 4 order and 8 family. The highest abundance of insects is dominated by the Formicidae Family, while the lowest abundance is the Syrpidae Family. Value insect pollinator diversity found among the sites that H' = 1.760 which indicates that the level of diversity of insect pollinators on plantations Pineapple (Ananas comosus (L.) Merr.) in the Bincau Village, Martapura District, Banjar Region, South Kalimantan in the medium category. Keywords: Diversity, Pollinator Insects, Pineapple, Bincau District

scholarly journals The Attractiveness of Five Common Mediterranean Weeds to Pollinators

Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1314
Author(s):  
Jane Morrison ◽  
Jordi Izquierdo ◽  
Eva Hernández Plaza ◽  
José L. González-Andújar
Keyword(s):  
Cost Effective ◽  
Agricultural Landscapes ◽  
Wild Plants ◽  
Weed Species ◽  
Convolvulus Arvensis ◽  
Daucus Carota L ◽  
Pollinator Abundance ◽  
Pollinator Conservation ◽  
Abundance And Diversity ◽  
Flower Visiting

Concerns about a global decline in pollinators have called for more knowledge about the factors influencing wild pollinator abundance and diversity in agroecosystems. Agricultural intensification has been identified as the main cause of this “global pollinator crisis”, particularly due to reductions in natural areas holding critical floral and nesting resources. Maintaining native wild plants in agricultural landscapes (e.g., in field margins) is often recommended as a cost-effective and efficient method for pollinator conservation. In this study, the role of common wild flowers, often considered weeds, in supporting pollinators in a Mediterranean agroecosystem was investigated. This work involved a two-year field trial to compare five native weed species common in Mediterranean cereal agroecosystems: Convolvulus arvensis L., Daucus carota L., Malva sylvestris L., Papaver rhoeas L., and Sonchus oleraceus L. The goal was to compare the attractiveness of these species, and a mixture of all five, to different flower-visiting insect groups in order to assess their value in supporting wild pollinators. Overall, D. carota had the highest number of insect visits, followed by P. rhoeas. C. arvensis, M. sylvestris, and S. oleraceus, which had lower numbers of visits. On the basis of their overall attractiveness to pollinators and low risk for invasiveness, D. carota, P. rhoeas, and M. sylvestris are the most likely to contribute positively to the conservation of pollinators in agroecosystems. Our results also suggest that it is advantageous for wild flowers sown for the purpose of pollinator conservation to be grown in clumps, rather than highly intermingled, for improved visitation rates.

Sign in / Sign up

Export Citation Format

Share Document