Parasitoid Wasp Community Dynamics in Vineyards Following Insecticide Application

In order to integrate parasitoid wasps in agroecosystems as biological control agents, we need to understand how insecticides affect the parasitoids in the crops and their surroundings. We investigated the non-target effect of Indoxacarb, an insecticide commonly used against European grapevine moth, on parasitoid wasp communities in vineyards. We focused on characterizing: 1. The dynamics of common wasp species, and 2. Wasp abundance and species richness in the vineyard center, edge, and nearby natural area. Seven vineyards, with neighboring natural areas, were sampled before, and up to 2 weeks after, Indoxacarb applications over 2 years. We expected initial negative effects of spraying in the vineyard with some effect of Indoxacarb drift into the natural habitat, followed by wasp recovery, first in natural areas, then at the vineyard edge and finally in the center. Sticky traps were hung at the vineyard edge and center to evaluate migration into and out of the vineyard. Vacuum sampling was used to obtain parasitoid total abundance and species richness, and the abundances of four common species (43% of the wasps collected). From the vacuum samples we found that total wasp abundance and richness declined after spraying in the vineyards’ margins and center but rose over time in the natural area. Vineyard wasp abundance was restored to pre-spraying levels within 2 weeks. Among the abundant species, Trichogramma sp. and Telenomus sp., which parasitize lepidopteran hosts, declined after spraying, and Trichogramma sp. recovered more quickly than Telenomus sp. Two other abundant species, Lymaenon litoralis and Oligosita sp., did not decline after spraying. In the sticky traps, wasp abundance increased at the vineyard edge but not center after spraying, suggesting that there was migration of wasps at the vineyard edge, into or out of the crop. The results indicate an effect of Indoxacarb on the parasitoid wasp community, particularly on parasitoids of lepidopterans, the target group of Indoxacarb. The results also indicate a potential for recovery of the parasitoid community through migration from neighboring natural vegetation.

Variations in the Landscape Along the High-Speed Rail Route

The development carried out in the last decades is degrading the ecosystems, damaging the existing biodiversity. One of the elements that is having the most impact on the deterioration of natural areas is the construction of transport infrastructures, among which are high-speed routes. These linear infrastructures are contributing to the deterioration of biodiversity enclaves, which contribute to providing highly relevant ecosystem services. Among these deteriorations are the processes of fragmentation and alteration of the landscape. This chapter analyses a situation that occurs in Spanish territory related to high-speed railways. This transport system began in Spain on the occasion of the Universal Exhibition of Seville 1992. By this transport activity, the changes suffered in the landscape are calculated and analysed through Corine land cover data since its inception until the last report of 2018.

Dendroarchaeology Potential in Various Natural Areas in West Siberia

Scientists face with many limitations that affect the success of dendrochronological dating working with archaeological (architectural) sites in Western Siberia. Here we analysed 134 sites and carried out the existing limitations of the method in different natural areas. As a result, a connection between the efficiency of dendrochronological dating and the physical and geographical conditions of sites was found. Created algorithm allowed to assess the potential of dendrochronology for the forest-steppe, taiga and forest-tundra areas of Western Siberia. The scientific results presented in the article can be used to solve the problems of chronology and periodization of archaeological and architectural sites of Western Siberia, as well as to increase the overall efficiency of the application of the dendrochronological method.

Role of Social Media Marketing in Ecotourism: Perspectives of Tourists Visiting Totally Protected Areas (TPAs) in Sarawak, Malaysia

Ecotourism or sustainable tourism, which is often advocated especially in natural areas for relaxation. The richness of natural areas in Malaysia has led ecotourism to become one of the fast-growing industries within the nation. A full understanding of ecotourism practices in planning, development and resource management is therefore needed to ensure sustainability without causing environmental degradation. The goal of this study is to discover the impacts of created resources (e.g.: tourism infrastructure and range of activities) and supporting resources (e.g.: destination accessibility and quality of tourism services) towards competitiveness of tourism destinations from both the perspective of domestic and international tourists along with the moderation of social media marketing.

Invasive Plants in Natural Areas: Air Potato (Dioscorea bulbifera)

This publication discusses impacts, distribution, identification, and control of air potato. Written by Stephen F. Enloe and Ken Langeland, and published by the UF/IFAS Agronomy Department, revised December 2021.

Climate Adaptive Silviculture for the City: Practitioners and Researchers Co-create a Framework for Studying Urban Oak-Dominated Mixed Hardwood Forests

Urban forested natural areas are an important component of the forest and tree canopy in northeastern United States urban areas. Although similar to native forests in surrounding regions in structure, composition, and function, these natural areas are threatened by multiple, co-occurring biological and climate stressors that are exacerbated by the urban environment. Furthermore, forests in cities often lack application of formal silvicultural approaches reliant upon evidence-based applied ecological sciences. These include both urban- and climate-adapted silvicultural techniques to increase the resilience and sustainability of native forests in cities. With this in mind, we convened a group of urban forest practitioners and researchers from along a latitudinal gradient in the northeastern United States to participate in a workshop focused on co-developing long-term, replicated ecological studies that will underlie the basis for potential silvicultural applications to urban forests. In this article we review the process and outcomes of the workshop, including an assessment of forest vulnerability, and adaptive capacity across the region, as well as shared management goals and objectives. We discuss the social and ecological challenges of managing urban oak-dominated mixed hardwood forests relative to non-urban forests and identify potential examples of urban- and climate-adapted silviculture strategies created by practitioners and researchers. In doing so, we highlight the challenges and need for basic and long-term applied ecological research relevant to silvicultural applications in cities.

Rare and Unusual Raptors of Northern Belize

The second smallest country in Central America, Belize has a stunning array of natural areas that is only matched by the remarkable diversity of animals that call them home. A small human population and strong conservation ethics have preserved nearly 75 percent of Belize in its natural state. This guide lists some of the rarer and more unusual raptors you might encounter while birding in northern Belize.