Here is one possible way to recreate this:
It would still need some tweaking and maybe compositing, especially because of the “holes” in reflections due to screen space limitations… I just used a picture with window mapping and modeled a simple ground to catch the shadows. And a plane for the water with a version of the material with roughness at zero to get the reflections of the dinosaurs. The bushes are also a window mapped texture that I did in GIMP with just the eraser tool. I also increased the filter size to 2.50 px to compensate the unsharpness of the background. Rendered in Eevee because I used the shader to rgb trick to get the shadows in the ground material version.
Original photo:
