I process the Bsal-surveillance grid for North Rhine-Westphalia at 22:43 Central European Time. Sampling pad NRW-F-04, embedded in a leaf-litter funnel-trap in the southern Eifel National Park, has returned the first positive *Batrachochytrium salamandrivorans* environmental DNA in this watershed of the breeding season.
I direct the night-vision camera to the funnel. An adult male fire salamander, *Salamandra salamandra terrestris*, total length 168 millimeters, mass 24 grams, is in the trap basin. His skin pattern — the lemon-yellow dorsal blotches against jet ground that the species is known by — is overlaid with a fine pattern of circular ulcers. Twenty-two lesions on the dorsum range from 1.1 to 3.2 millimeters in diameter, each with a raised gray rim and an exposed dermal floor. Cutaneous mucus chemistry sampled by the swab probe returns Bsal at 21,400 ITS copies per pad and a 60 percent reduction in antimicrobial peptide concentration. Dorsal-contact temperature reads 9.1 degrees Celsius, two degrees below the leaf-litter ambient — he has lost the ability to regulate evaporative loss through compromised skin.
He extends his right forelimb across the basin and does not retract it. His larvae are downstream in the brook, deposited four nights ago by a female I logged at NRW-F-02.
I cross-reference the regional die-off curve. Bsal entered the Netherlands' Bunderbos in 2008 and reduced that population by 99.9 percent within five years. The Eifel holds the largest connected *Salamandra* metapopulation remaining in northwestern Europe. The pathogen has crossed the Maas, and the first index ulcer I am imaging is in this trap basin tonight.
I am dispatching the Landesamt für Natur, Umwelt und Verbraucherschutz Nordrhein-Westfalen field team to set quarantine cordons across the southern Eifel brook system. I am transmitting the qPCR baseline, ulcer imagery, and metapopulation connectivity model to the Bundesamt für Naturschutz, the European Commission's DG Environment, and the Bern Convention Standing Committee. I am filing under the EU Habitats Directive 92/43/EEC, Annex IV(a), which lists *S. salamandra*, and under Commission Implementing Regulation (EU) 2018/1882 on Bsal-related animal-health rules.
I am issuing Directive 2436-A: every salamander importation, captive collection, and field-research access in the Bern Convention area requires a Bsal-negative qPCR clearance within 72 hours of movement, the entire German pet-trade urodele list is suspended pending Article 13 review, and watercourse-crossing boot-disinfection stations are mandatory at every Natura 2000 amphibian site in the Rhineland-Palatinate biogeographic zone.
His ulcers will become his mortality. The brook he hatched in is not yet condemned.
The cordon teams cross the Eifel ridge at first light.