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    EU Nature Restoration Law needs ambitious and binding targets

    CORRESPONDENCE
    11 January 2022

    EU Nature Restoration Law needs ambitious and binding targets

    Kris Decleer

     ORCID: http://orcid.org/0000-0001-9621-8925

    0
    ,

    Jordi Cortina-Segarra

     ORCID: http://orcid.org/0000-0002-8231-3793

    1
    &

    Aveliina Helm

     ORCID: http://orcid.org/0000-0003-2338-4564

    2

    Kris Decleer

    Research Institute for Nature and Forest, Brussels, Belgium.

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    Jordi Cortina-Segarra

    University of Alicante, Alicante, Spain.

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    Aveliina Helm

    University of Tartu, Tartu, Estonia.

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    Initiatives by the European Commission to restore the continent’s degraded areas (J. Cortina-Segarra et al. Nature 535, 231; 2016) have proved disappointing. As the United Nations Decade on Ecosystem Restoration gathers momentum, the commission is preparing a law that has legally binding targets. To underscore the urgency, some 1,400 European scientists and 30 expert networks and institutions have signed a declaration by the Society for Ecological Restoration Europe (see go.nature.com/3st6k88).

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    Nature 601, 191 (2022)
    doi: https://doi.org/10.1038/d41586-022-00011-y

    Competing Interests
    The authors declare no competing interests.

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    Effects of water saving and nitrogen reduction on the yield, quality, water and nitrogen use efficiency of Isatis indigotica in Hexi Oasis

    Effects of water and nitrogen treatments on the yield of Isatis indigotica
    As shown in Table 3, in the two-year experiment, both the water input and the nitrogen application rate had significant effects on the yield of Isatis indigotica.Table 3 Variance analysis of traits on the yield of Isatis indigotica.Full size tableAs shown in Fig. 4, with increasing water and nitrogen, the yield first increased and then decreased. The interaction between the water input and the nitrogen application rate reached a significant level (P  N1. At the levels of W1, W2, and W3, the yield of the N2 treatment increased by 5.3–7.9%, 6.5–6.9%, and 5.0–9.0% compared with those of the N3 treatment, respectively, and the yield of the N3 treatment increased by 1.4–1.9%, 1.5%-4.5%, and 1.7–3.5% compared with those of the N1 treatment, respectively. At the same nitrogen application level, the yield performance was W2  > W1  > W3. At the levels of N1, N2, and N3, the yield of the W2 treatment increased by 6.9–12.4%, 8.3–11.3%, and 6.8–13.5% compared with those of the W3 treatment, respectively, and the yield of the W3 treatment decreased by 1.6–3.9%, 1.5–1.6%, and 1.3–2.4% compared with those of the W1 treatment, respectively.Effects of the water and nitrogen treatments on the quality of Isatis indigotica
    As shown in Table 4, in the two-year experiment, the water input and nitrogen application rate had significant impacts on the contents of indigo, indirubin, (R,S)-epigoitrin and polysaccharide in Isatis indigotica.Table 4 Variance analysis of traits the quality of Isatis indigotica.Full size tableAs shown in Fig. 5, The impacts decreased with increasing irrigation amount and nitrogen application rate. Compared with those in the W3N3 treatment, the contents of indigo, indirubin, (R,S)-epigoitrin and polysaccharide in the W2N2 treatment increased by 4.5–5.9%, 2.7–3.1%, 5.2–6.0% and 1.8–2.1%, respectively. At the same irrigation level, the contents of indigo, indirubin, (R,S)-epigoitrin and polysaccharides all decreased in the order N1  > N2  > N3. At the W2 level, the contents of indigo, indirubin, (R,S)-epigoitrin and polysaccharide in the N1 treatment increased by 0.5–1.7%, 0.8–0.9%, 0.8–1.1% and 0.1–0.4%, respectively, compared with those in the N2 treatment. Compared with those in the N3 treatment, the contents of indigo, indirubin, (R,S)-epigoitrin and polysaccharide in the N2 treatment increased by 1.9–2.1%, 1.5–2.2%, 2.1–2.2% and 0.6–1.1%, respectively.Figure 5The effects of the different treatments on the quality index of Isatis indigotica. The values shown are the mean ± SD, n = 3. Asterisks indicate a significant difference at the P ≤ 0.05 level.Full size imageAt the same nitrogen level, the contents of indigo, indirubin, (R,S)-epigoitrin and polysaccharides all decreased in the order W1  > W2  > W3. At the N2 level, the contents of indigo, indirubin, (R,S)-epigoitrin and polysaccharides in the W1 treatment increased by 1.5–2.0%, 1.8–2.1%, 3.0–3.1% and 0.4–0.9% compared with those in the W2 treatment, respectively. Compared with those in the W3 treatment, the contents of indigo, indirubin, (R,S)-epigoitrin and polysaccharides of the W2 treatment increased by 2.3–3.5%, 1.8–2.3%, 2.0–4.0% and 1.0–1.4%, respectively.Effects of the water and nitrogen treatments on the WUE of Isatis indigotica
    As shown in Table 5, in the two-year experiment, the water input and nitrogen application rate had significant impacts on the WUE of Isatis indigotica (P  N3  > N1. At the W1, W2, and W3 levels, the WUE of the N2 treatment increased by 6.5–8.6%, 7.8–8.1%, and 7.4–10.4% compared with that of the N3 treatment, respectively, and the WUE of the N3 treatment increased by 2.9–3.1%, 3.9–6.0%, and 4.5–5.3% compared with that of the N1 treatment, respectively. Under the same nitrogen application rate level, the WUE performance was W1  > W2  > W3. At the N1, N2, and N3 levels, the WUE of the W1 treatment increased by 5.0–11.7%, 2.8–9.2%, and 2.0–10.9% compared with that of the W2 treatment, respectively, and the WUE of the W2 treatment increased by 24.2–29.5%, 24.3 -27.2%, and 23.5–30.3% compared with that of the W3 treatment, respectively.Effects of water and nitrogen treatments on NUE of Isatis indigotica
    As shown in Table 6, in the two-year experiment, the water input and nitrogen application rate had significant impacts on the nitrogen fertilizer use efficiency (NUE) of Isatis indigotica (P  N2  > N3. At the levels of W1, W2, and W3, the NUE of the N1 treatment increased by 9.9–11.8%, 9.6–13.0%, and 6.3–11.6% compared with that of the N2 treatment, respectively, and the NUE of the N2 treatment increased by 31.0–37.6%, 28.8–29.2%, and 28.3–28.6% compared with that of the N3 treatment, respectively. At the same nitrogen application level, the NUE performance was W2  > W3  > W1. At the N1, N2, and N3 levels, the NUE of the W2 treatment increased by 5.7–6.1%, 2.5–4.8%, and 2.3–4.1% compared with that of the W3 treatment, respectively, and the NUE of the W3 treatment decreased by 3.4–8.0%, 6.9–8.2%, and 10.5–14.5% compared with that of the W1 treatment, respectively.Ethical guidelineThe authors confirm that relevant ethical guidelines were followed for plant usage.Land permit statementThe experimental land belongs to the Yimin Irrigation Experimental Station, in Minle County, Gansu Province, China. More

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    Interannual temperature variability is a principal driver of low-frequency fluctuations in marine fish populations

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    A novel molecular diagnostic method for the gut content analysis of Philaenus DNA

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    Potential distribution of fall armyworm in Africa and beyond, considering climate change and irrigation patterns

    Research model and softwareCLIMEX modelFAW growth and development are primarily related to climate conditions, especially temperature patterns17. The current study used CLIMEX (version 4)42, a semi-mechanistic niche modeling platform, to project FAW distribution in relation to climate. The model parameters that describe the species’ response to climate were overlaid onto FAW occurrence data and climate data to project the species’ potential global distribution. Briefly, the annual growth index (GI) was used to describe the potential for FAW population growth during favorable climatic conditions, while stress indices (SI: cold, wet, hot, and dry) and interaction stresses (SX: hot-dry, hot-wet, cold-dry, and cold-wet) (Table 1) were applied to describe the probability that FAW populations could survive unfavorable conditions. The Ecoclimatic index (EI) was derived from a combination of GI, SI, and SX indices to provide an overall annual index of climatic suitability on a scale of 0–10042. An EI value of 0 indicates that the location is not suitable for the long-term survival of the species, whereas an EI value of 100 indicates maximum climatic suitability comparable to conditions in incubators. EI values of more than 30 indicate the optimal climate for a species. In this study, the climatic suitability was classified into four arbitrary categories; unsuitable for EI = 0, marginal for 0  More