Conservation conflicts:Behavioural threats, frames, and intervention recommendations

Conservation conflicts are widespread and are damaging for biodiversity, livelihoods and human well-being. Conflict management often occurs through interventions targeting human behaviour. Conservation interventions are thought to be made more effective if underpinned by evidence and a Theory of Change – a logical argument outlining the steps required to achieve goals. However, for conservation conflicts, the evidence and logic supporting different types of interventions has received little attention. Using conflict-related keywords, we reviewed trends in behavioural intervention recommendations across conflict contexts globally, as published in peer-reviewed literature. We developed typologies for conflict behaviours, intervention recommendations, and conflict frames and identified associations between them and other geographical variables using Pearson's Chi-squared tests of independence. Analysing 100 recent articles, we found that technical interventions (recommended in 38% of articles) are significantly associated with conflicts involving wildlife control and the human-wildlife conflict frame. Enforcement-based interventions (54% of articles) are significantly associated with conflicts over illegal resource use, while stakeholder-based interventions (37% of articles) are associated with the human-human conflict frame and very highly developed countries. Only 10% of articles offered “strong” evidence from the published scientific literature justifying recommendations, and only 15% outlined Theories of Change. We suggest that intervention recommendations are likely influenced by authors' perceptions of the social basis of conflicts, and possibly also by disciplinary silos

Consequences Matter : Compassion in Conservation Means Caring for Individuals, Populations and Species

Funding This research received no external funding. Acknowledgments The manuscript benefitted from significant input from Dan Brockington, J.B. Callicott, Peter Coals, Tim Hodgetts, David Macdonald and Jeremy Wilson. Conflicts of Interest The authors declare no conflict of interest.Peer reviewedPublisher PD

Molecular and atomic gas in dust lane early-type galaxies - I : Low star-formation efficiencies in minor merger remnants

In this work we present IRAM-30m telescope observations of a sample of bulge-dominated galaxies with large dust lanes, which have had a recent minor merger. We find these galaxies are very gas rich, with H2 masses between 4x10^8 and 2x10^10 Msun. We use these molecular gas masses, combined with atomic gas masses from an accompanying paper, to calculate gas-to-dust and gas-to-stellar mass ratios. The gas-to-dust ratios of our sample objects vary widely (between ~50 and 750), suggesting many objects have low gas-phase metallicities, and thus that the gas has been accreted through a recent merger with a lower mass companion. We calculate the implied minor companion masses and gas fractions, finding a median predicted stellar mass ratio of ~40:1. The minor companion likely had masses between ~10^7 - 10^10 Msun. The implied merger mass ratios are consistent with the expectation for low redshift gas-rich mergers from simulations. We then go on to present evidence that (no matter which star-formation rate indicator is used) our sample objects have very low star-formation efficiencies (star-formation rate per unit gas mass), lower even than the early-type galaxies from ATLAS3D which already show a suppression. This suggests that minor mergers can actually suppress star-formation activity. We discuss mechanisms that could cause such a suppression, include dynamical effects induced by the minor merger.Peer reviewe

Occipitoatlantal Dislocation

OCCIPITOATLANTAL DISLOCATION (OAD) can be devastating. This injury may be fatal in many cases, but more survivors are reported because of improvements in diagnosis and treatment. This article describes the diagnosis and treatment of OAD. To diagnose and treat OAD appropriately, neurosurgeons must have a detailed understanding of the anatomy of the craniocervical junction. Various radiographic criteria are used to establish the diagnosis of OAD. A destabilizing injury such as OAD requires surgical fixation. Many surgical techniques are available for fixation of the craniocervical junction. Future studies will continue to refine the diagnostic criteria for OAD and to develop improved methods for craniocervical stabilization. Copyright © 2010 by the Congress of Neurological Surgeons

The Role of Cultured Schwann Cell Grafts in the Repair of Gaps within the Peripheral Nervous System of Primates

With recent advances in cell culture techniques it is possible to isolate human SCs from adult peripheral nerves, expand and purify their number in cell culture, and construct a cellular prosthesis from the cultured cells. The current study was designed to ascertain whether these techniques could be used to repair nonhuman primate nerve injuries. In 12 adult femalecynomologousmonkeys, the musculocutaneous (msk) nerve was divided and prevented from regenerating and the brachioradialis nerve (brach) was exposed bilaterally (n=24 nerves) and injured so that a 15-mm gap existed within the nerve. The brach nerves were either repaired with sural nerve autografts (n=6), guidance channels which contained monkey SCs (120×106cells/ml;n=6), or guidance channels without SCs (n=6). The remaining brach nerves (n=6) had either no injury or an injury to the nerve without a repair. Autologous expanded primate SCs were increased in number at least 10-fold over a 2-week period at which time the SC purity exceeded 99.9%. Monkeys in each group, including the control group, regained some degree of elbow flexion after 3 months despite sectioning both the mask nerve and the brach nerve; therefore, we were unable to determine simply on clinical grounds which repair was the most effective in promoting functional recovery. Brach nerves repaired with sural nerve grafts were superior to both the channels which contained SCs and empty channels in regards to the number of myelinated axons proximal, within, and distal to the repair site (P<0.05). Electrophysiologic results closely paralleled the histologic data with evidence of reinnervation of the brachioradialis muscle based on the compound muscle action potential in both sural nerve graft and monkey SC channel repair groups

Four-Level Anterior Cervical Discectomy and Fusion With Plate Fixation: Radiographic and Clinical Results

OBJECTIVE: Anterior cervical discectomy and fusion with plating is a common procedure performed for cervical spondylosis by spine surgeons. However, data on procedures involving 4 disc spaces are lacking. We report the outcomes of patients who underwent 4-level anterior cervical discectomy and fusion with plating at a single institution. METHODS: Between 1997 and 2006, 34 patients (19 females, 15 males; mean age, 58 years; age range, 38-83 years) underwent 4-level anterior cervical discectomy and fusion with plating based on a surgical database search. Only patients undergoing surgery at 4 contiguous disc levels were included. Data were collected in a retrospective fashion. Patients\u27 demographics, symptoms, neurologic findings, and radiographic findings at admission were recorded. Long-term clinical and radiographic outcomes at last follow-up were analyzed. RESULTS: Twenty-nine patients (85%) underwent anterior cervical discectomy and fusion with plating at C3-C7. Sixteen patients presented with neurologic deficits, of which 14 (88%) improved. None worsened after surgery. Minor complications occurred in 26 patients, including transient dysphagia in 18 (53%) and hoarseness in 3 (9%). Radiographic outcomes were available in 27 patients (median follow-up, 15 months; range, 4-71 months). The overall fusion rate was 92.6%. Stable fibrous nonunions were present in 2 patients; the chance of nonunion was 1.9% per level and 7% per patient. Adjacent-level disease occurred in 2 patients. CONCLUSION: In carefully selected patients, 4-level anterior cervical discectomy and fusion with plating can be associated with high rates of fusion. The technique is safe and effective for managing multilevel cervical spondylotic myelopathy and may obviate the need for circumferential procedures. Copyright © 2010 by the Congress of Neurological Surgeons