1. It is hypothesised that ecological restoration in grasslands can induce an alternative stable state shift in vegetation. The change in vegetation influences insect community assemblages and allows for greater functional redundancy in pollination and refuge for native insect species.2. Insect community assemblages at eight coastal California grassland sites were evaluated. Half of these sites had undergone restoration through active revegetation of native grassland flora and half were non-restored. Insects were collected from Lupinus bicolor (Fabaceae) within 2 × 2-m 2 plots in spring 2017. Lupinus bicolor is a common native species that is used in California restoration projects, and home and state landscaping projects.3. Ordination demonstrated that insect community assemblages were different between restored and non-restored sites. These differences were seen in insect functional groups as well as taxa-specific differences and were found to be driven by environmental characteristics such as non-native forb cover.4. Functional redundancy of herbivores decreased at restored sites, while pollinators became more redundant compared with non-restored sites. The assemblages of the common species found at restoration sites contained more native insects than those found at non-restored sites, including species such as Bombus vosnesenskii.5. Local grassland restoration has the potential to induce an alternative stable state change and affect insect community assemblages. Additionally, it was found that grassland restoration can be a potential conservation tool to provide refugia for bumblebees (Bombus), but additional studies are required to fully understand its broader applicability.
1. Climate change will increase uncertainty in restoration outcomes due to greater water stress and other abiotic filters that limit plant survival. Drought-related plant functional traits can help species withstand filters in a semi-arid environment. Our objective was to provide guidance for selecting species to improve restoration success in a changing climate.2. We planted 12 native species in ambient rainfall and under 60% rain-out shelters in an invaded coastal grassland in central California. We measured survival and size annually for 4 years and quantified plant community and trait composition in the third and fourth years. We measured growth rate, specific leaf area (SLA), leaf C:N, leaf lobedness and leaf δ 13 C of all planted species and dominant extant species, and evaluated the effect of treatments, traits and phylogenetics on mortality risk using Cox proportional hazards.3. Native perennial species cover was greater, whereas thatch depth and per cent cover of shrubs and non-native annual grasses were lower, on drought plots.Drought plots had lower community-weighted leaf C:N and higher leaf lobedness. 4. Planted species with resource conservative traits, such as higher leaf lobedness and lower growth rate, had lower mortality risk. Increased plasticity of morphological traits (SLA and lobedness) was associated with decreased mortality risk, whereas increased plasticity of physiological traits (leaf C:N and δ 13 C) and risk was positively correlated. Trait plasticity explained a greater degree of plant mortality risk compared to absolute trait values.5. Plants that were more phylogenetically related to the surrounding plant community had lower mortality risk. Traits of planted species that were important for determining plant mortality in this coastal grassland may be conserved, which was supported by a phylogenetic signal (Blomberg's K = 0.380, Pagel's λ = 0.830) in leaf C:N. Synthesis and applications.Our results suggest that leaf traits and phylogenetics could serve as plant selection criteria for reducing plant mortality risk during drought, thereby improving restoration outcomes. Because some traits have a phylogenetic signal that explains drought survival, restoration practitioners could | 1671
Trevyn A. Toone (He/they) 1,2,3 , Sam J. Ahler (They/he) 4,5 , Julie E. Larson (She/her) 4,5,6 , Justin C. Luong (He/him) 7,8 , Francisco Martínez-Baena 9,10 , Carlos A. Ord oñez-Parra (He/him) 11 , Mateus C. Silva (He/him) 12 , Isabelle B. C. van der Ouderaa (She/her) 13 Scientists who identify as lesbian, gay, bisexual, transgender, queer, or members of other marginalized sexual orientations and gender identities (LGBTQ+) face serious disparities compared to their non-LGBTQ+ peers. Restoration science presents additional risks for LGBTQ+ researchers, including extensive time in the field-sometimes in locations that are hostile to LGBTQ+ people or create discomfort around gender expression and sexual orientation. At the same time, restoration science is uniquely positioned to create change: the same principles that shape ecosystem restoration also provide a blueprint for cultivating inclusion in science. We present 10 recommendations for LGBTQ+ inclusion based on four guiding restoration principles: (1) Context is key; (2) Healthy environments require support; (3) Success needs to be defined; and (4) A diverse future is worth striving for. We provide concrete actions that individuals and institutions can take and emphasize the positive outcomes that LGBTQ+ inclusion can generate for a healthier restoration community.
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